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Finding the Fourth Proportional to 945,693,287.60, 1,418,539,931.40 and 816,446,836.40

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Solution

The fourth proportional to 945,693,287.60, 1,418,539,931.40 and 816,446,836.40 is: 1,224,670,254.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,693,287.60 : 1,418,539,931.40 = 816,446,836.40 : x
  2. Step 2: Convert to fraction form
    945,693,287.60/1,418,539,931.40 = 816,446,836.40/x
  3. Step 3: Cross multiply
    945,693,287.60x = 1,418,539,931.40 × 816,446,836.40
  4. Step 4: Simplify right side
    945,693,287.60x = 1,158,162,439,298,603,008
  5. Step 5: Solve for x
    x = 1,158,162,439,298,603,008/945,693,287.60
  6. Step 6: Final answer
    x = 1,224,670,254.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.