Home / 787,463.91-1,086,690.74-447,931.35

Finding the Fourth Proportional to 787,463.91, 1,086,690.74 and 447,931.35

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Solution

The fourth proportional to 787,463.91, 1,086,690.74 and 447,931.35 is: 618,139.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,463.91 : 1,086,690.74 = 447,931.35 : x
  2. Step 2: Convert to fraction form
    787,463.91/1,086,690.74 = 447,931.35/x
  3. Step 3: Cross multiply
    787,463.91x = 1,086,690.74 × 447,931.35
  4. Step 4: Simplify right side
    787,463.91x = 486,762,847,961.04
  5. Step 5: Solve for x
    x = 486,762,847,961.04/787,463.91
  6. Step 6: Final answer
    x = 618,139.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.