Home / 724,679.97-1,085,836.22-440,457.45

Finding the Fourth Proportional to 724,679.97, 1,085,836.22 and 440,457.45

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Solution

The fourth proportional to 724,679.97, 1,085,836.22 and 440,457.45 is: 659,966.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,679.97 : 1,085,836.22 = 440,457.45 : x
  2. Step 2: Convert to fraction form
    724,679.97/1,085,836.22 = 440,457.45/x
  3. Step 3: Cross multiply
    724,679.97x = 1,085,836.22 × 440,457.45
  4. Step 4: Simplify right side
    724,679.97x = 478,264,647,956.38
  5. Step 5: Solve for x
    x = 478,264,647,956.38/724,679.97
  6. Step 6: Final answer
    x = 659,966.70

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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.