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Finding the Fourth Proportional to 616,370.30, 926,110.65 and 391,838.30

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Solution

The fourth proportional to 616,370.30, 926,110.65 and 391,838.30 is: 588,746.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,370.30 : 926,110.65 = 391,838.30 : x
  2. Step 2: Convert to fraction form
    616,370.30/926,110.65 = 391,838.30/x
  3. Step 3: Cross multiply
    616,370.30x = 926,110.65 × 391,838.30
  4. Step 4: Simplify right side
    616,370.30x = 362,885,622,707.90
  5. Step 5: Solve for x
    x = 362,885,622,707.90/616,370.30
  6. Step 6: Final answer
    x = 588,746.12

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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.