Home / 671,432.10-1,007,148.15-519,216.90

Finding the Fourth Proportional to 671,432.10, 1,007,148.15 and 519,216.90

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Solution

The fourth proportional to 671,432.10, 1,007,148.15 and 519,216.90 is: 778,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,432.10 : 1,007,148.15 = 519,216.90 : x
  2. Step 2: Convert to fraction form
    671,432.10/1,007,148.15 = 519,216.90/x
  3. Step 3: Cross multiply
    671,432.10x = 1,007,148.15 × 519,216.90
  4. Step 4: Simplify right side
    671,432.10x = 522,928,340,283.74
  5. Step 5: Solve for x
    x = 522,928,340,283.74/671,432.10
  6. Step 6: Final answer
    x = 778,825.35

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Double scale
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Similar ratio
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1.5x scale

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.