Home / 515,904.10-773,856.15-326,947.30

Finding the Fourth Proportional to 515,904.10, 773,856.15 and 326,947.30

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Solution

The fourth proportional to 515,904.10, 773,856.15 and 326,947.30 is: 490,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,904.10 : 773,856.15 = 326,947.30 : x
  2. Step 2: Convert to fraction form
    515,904.10/773,856.15 = 326,947.30/x
  3. Step 3: Cross multiply
    515,904.10x = 773,856.15 × 326,947.30
  4. Step 4: Simplify right side
    515,904.10x = 253,010,178,830.90
  5. Step 5: Solve for x
    x = 253,010,178,830.90/515,904.10
  6. Step 6: Final answer
    x = 490,420.95

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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.