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Finding the Fourth Proportional to 645,807.60, 968,711.40 and 496,335.60

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Solution

The fourth proportional to 645,807.60, 968,711.40 and 496,335.60 is: 744,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,807.60 : 968,711.40 = 496,335.60 : x
  2. Step 2: Convert to fraction form
    645,807.60/968,711.40 = 496,335.60/x
  3. Step 3: Cross multiply
    645,807.60x = 968,711.40 × 496,335.60
  4. Step 4: Simplify right side
    645,807.60x = 480,805,953,945.84
  5. Step 5: Solve for x
    x = 480,805,953,945.84/645,807.60
  6. Step 6: Final answer
    x = 744,503.40

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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.