Home / 724,457.40-1,086,686.10-409,529.40

Finding the Fourth Proportional to 724,457.40, 1,086,686.10 and 409,529.40

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Solution

The fourth proportional to 724,457.40, 1,086,686.10 and 409,529.40 is: 614,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,457.40 : 1,086,686.10 = 409,529.40 : x
  2. Step 2: Convert to fraction form
    724,457.40/1,086,686.10 = 409,529.40/x
  3. Step 3: Cross multiply
    724,457.40x = 1,086,686.10 × 409,529.40
  4. Step 4: Simplify right side
    724,457.40x = 445,029,906,521.34
  5. Step 5: Solve for x
    x = 445,029,906,521.34/724,457.40
  6. Step 6: Final answer
    x = 614,294.10

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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.