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Finding the Fourth Proportional to 616,371.40, 923,001.90 and 491,955.40

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Solution

The fourth proportional to 616,371.40, 923,001.90 and 491,955.40 is: 736,691.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,371.40 : 923,001.90 = 491,955.40 : x
  2. Step 2: Convert to fraction form
    616,371.40/923,001.90 = 491,955.40/x
  3. Step 3: Cross multiply
    616,371.40x = 923,001.90 × 491,955.40
  4. Step 4: Simplify right side
    616,371.40x = 454,075,768,915.26
  5. Step 5: Solve for x
    x = 454,075,768,915.26/616,371.40
  6. Step 6: Final answer
    x = 736,691.82

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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.