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Finding the Fourth Proportional to 610,688.16, 916,559.28 and 423,830.88

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Solution

The fourth proportional to 610,688.16, 916,559.28 and 423,830.88 is: 636,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,688.16 : 916,559.28 = 423,830.88 : x
  2. Step 2: Convert to fraction form
    610,688.16/916,559.28 = 423,830.88/x
  3. Step 3: Cross multiply
    610,688.16x = 916,559.28 × 423,830.88
  4. Step 4: Simplify right side
    610,688.16x = 388,466,126,214.57
  5. Step 5: Solve for x
    x = 388,466,126,214.57/610,688.16
  6. Step 6: Final answer
    x = 636,112.10

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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.