Home / 657,913.16-907,920.18-356,107.40

Finding the Fourth Proportional to 657,913.16, 907,920.18 and 356,107.40

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Solution

The fourth proportional to 657,913.16, 907,920.18 and 356,107.40 is: 491,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,913.16 : 907,920.18 = 356,107.40 : x
  2. Step 2: Convert to fraction form
    657,913.16/907,920.18 = 356,107.40/x
  3. Step 3: Cross multiply
    657,913.16x = 907,920.18 × 356,107.40
  4. Step 4: Simplify right side
    657,913.16x = 323,317,094,707.33
  5. Step 5: Solve for x
    x = 323,317,094,707.33/657,913.16
  6. Step 6: Final answer
    x = 491,428.22

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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.