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Finding the Fourth Proportional to 550,646.70, 760,508.15 and 379,091.13

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Solution

The fourth proportional to 550,646.70, 760,508.15 and 379,091.13 is: 523,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,646.70 : 760,508.15 = 379,091.13 : x
  2. Step 2: Convert to fraction form
    550,646.70/760,508.15 = 379,091.13/x
  3. Step 3: Cross multiply
    550,646.70x = 760,508.15 × 379,091.13
  4. Step 4: Simplify right side
    550,646.70x = 288,301,893,957.71
  5. Step 5: Solve for x
    x = 288,301,893,957.71/550,646.70
  6. Step 6: Final answer
    x = 523,569.64

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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.