Home / 724,274.10-1,086,411.15-440,838.90

Finding the Fourth Proportional to 724,274.10, 1,086,411.15 and 440,838.90

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Solution

The fourth proportional to 724,274.10, 1,086,411.15 and 440,838.90 is: 661,258.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,274.10 : 1,086,411.15 = 440,838.90 : x
  2. Step 2: Convert to fraction form
    724,274.10/1,086,411.15 = 440,838.90/x
  3. Step 3: Cross multiply
    724,274.10x = 1,086,411.15 × 440,838.90
  4. Step 4: Simplify right side
    724,274.10x = 478,932,296,313.74
  5. Step 5: Solve for x
    x = 478,932,296,313.74/724,274.10
  6. Step 6: Final answer
    x = 661,258.35

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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.