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Finding the Fourth Proportional to 485,501.39, 670,070.84 and 292,104.57

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Solution

The fourth proportional to 485,501.39, 670,070.84 and 292,104.57 is: 403,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,501.39 : 670,070.84 = 292,104.57 : x
  2. Step 2: Convert to fraction form
    485,501.39/670,070.84 = 292,104.57/x
  3. Step 3: Cross multiply
    485,501.39x = 670,070.84 × 292,104.57
  4. Step 4: Simplify right side
    485,501.39x = 195,730,755,639.98
  5. Step 5: Solve for x
    x = 195,730,755,639.98/485,501.39
  6. Step 6: Final answer
    x = 403,151.79

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1.5x scale

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.