Home / 724,583.30-1,085,665.38-319,171.50

Finding the Fourth Proportional to 724,583.30, 1,085,665.38 and 319,171.50

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Solution

The fourth proportional to 724,583.30, 1,085,665.38 and 319,171.50 is: 478,224.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,583.30 : 1,085,665.38 = 319,171.50 : x
  2. Step 2: Convert to fraction form
    724,583.30/1,085,665.38 = 319,171.50/x
  3. Step 3: Cross multiply
    724,583.30x = 1,085,665.38 × 319,171.50
  4. Step 4: Simplify right side
    724,583.30x = 346,513,447,832.67
  5. Step 5: Solve for x
    x = 346,513,447,832.67/724,583.30
  6. Step 6: Final answer
    x = 478,224.45

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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.