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Finding the Fourth Proportional to 718,655.70, 991,115.01 and 575,363.46

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Solution

The fourth proportional to 718,655.70, 991,115.01 and 575,363.46 is: 793,497.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,655.70 : 991,115.01 = 575,363.46 : x
  2. Step 2: Convert to fraction form
    718,655.70/991,115.01 = 575,363.46/x
  3. Step 3: Cross multiply
    718,655.70x = 991,115.01 × 575,363.46
  4. Step 4: Simplify right side
    718,655.70x = 570,251,361,411.54
  5. Step 5: Solve for x
    x = 570,251,361,411.54/718,655.70
  6. Step 6: Final answer
    x = 793,497.31

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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.