Home / 763,411.90-1,145,117.85-687,304.30

Finding the Fourth Proportional to 763,411.90, 1,145,117.85 and 687,304.30

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Solution

The fourth proportional to 763,411.90, 1,145,117.85 and 687,304.30 is: 1,030,956.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,411.90 : 1,145,117.85 = 687,304.30 : x
  2. Step 2: Convert to fraction form
    763,411.90/1,145,117.85 = 687,304.30/x
  3. Step 3: Cross multiply
    763,411.90x = 1,145,117.85 × 687,304.30
  4. Step 4: Simplify right side
    763,411.90x = 787,044,422,311.76
  5. Step 5: Solve for x
    x = 787,044,422,311.76/763,411.90
  6. Step 6: Final answer
    x = 1,030,956.45

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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.