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Finding the Fourth Proportional to 876,893.60, 1,315,340.40 and 245,914.40

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Solution

The fourth proportional to 876,893.60, 1,315,340.40 and 245,914.40 is: 368,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,893.60 : 1,315,340.40 = 245,914.40 : x
  2. Step 2: Convert to fraction form
    876,893.60/1,315,340.40 = 245,914.40/x
  3. Step 3: Cross multiply
    876,893.60x = 1,315,340.40 × 245,914.40
  4. Step 4: Simplify right side
    876,893.60x = 323,461,145,261.76
  5. Step 5: Solve for x
    x = 323,461,145,261.76/876,893.60
  6. Step 6: Final answer
    x = 368,871.60

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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.