Home / 724,388.20-1,087,359.90-409,460.20

Finding the Fourth Proportional to 724,388.20, 1,087,359.90 and 409,460.20

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Solution

The fourth proportional to 724,388.20, 1,087,359.90 and 409,460.20 is: 614,629.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,388.20 : 1,087,359.90 = 409,460.20 : x
  2. Step 2: Convert to fraction form
    724,388.20/1,087,359.90 = 409,460.20/x
  3. Step 3: Cross multiply
    724,388.20x = 1,087,359.90 × 409,460.20
  4. Step 4: Simplify right side
    724,388.20x = 445,230,602,125.98
  5. Step 5: Solve for x
    x = 445,230,602,125.98/724,388.20
  6. Step 6: Final answer
    x = 614,629.84

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Double scale
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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.