Home / 739,352.52-1,020,306.90-399,820.74

Finding the Fourth Proportional to 739,352.52, 1,020,306.90 and 399,820.74

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Solution

The fourth proportional to 739,352.52, 1,020,306.90 and 399,820.74 is: 551,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,352.52 : 1,020,306.90 = 399,820.74 : x
  2. Step 2: Convert to fraction form
    739,352.52/1,020,306.90 = 399,820.74/x
  3. Step 3: Cross multiply
    739,352.52x = 1,020,306.90 × 399,820.74
  4. Step 4: Simplify right side
    739,352.52x = 407,939,859,785.11
  5. Step 5: Solve for x
    x = 407,939,859,785.11/739,352.52
  6. Step 6: Final answer
    x = 551,752.85

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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.