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Finding the Fourth Proportional to 965,003.60, 1,331,505.60 and 557,098.40

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Solution

The fourth proportional to 965,003.60, 1,331,505.60 and 557,098.40 is: 768,680.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,003.60 : 1,331,505.60 = 557,098.40 : x
  2. Step 2: Convert to fraction form
    965,003.60/1,331,505.60 = 557,098.40/x
  3. Step 3: Cross multiply
    965,003.60x = 1,331,505.60 × 557,098.40
  4. Step 4: Simplify right side
    965,003.60x = 741,779,639,351.04
  5. Step 5: Solve for x
    x = 741,779,639,351.04/965,003.60
  6. Step 6: Final answer
    x = 768,680.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.