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Finding the Fourth Proportional to 616,929.48, 851,020.74 and 358,778.16

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Solution

The fourth proportional to 616,929.48, 851,020.74 and 358,778.16 is: 494,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,929.48 : 851,020.74 = 358,778.16 : x
  2. Step 2: Convert to fraction form
    616,929.48/851,020.74 = 358,778.16/x
  3. Step 3: Cross multiply
    616,929.48x = 851,020.74 × 358,778.16
  4. Step 4: Simplify right side
    616,929.48x = 305,327,655,219.04
  5. Step 5: Solve for x
    x = 305,327,655,219.04/616,929.48
  6. Step 6: Final answer
    x = 494,915.00

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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.