Home / 783,732.18-1,175,931.09-428,331

Finding the Fourth Proportional to 783,732.18, 1,175,931.09 and 428,331

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Solution

The fourth proportional to 783,732.18, 1,175,931.09 and 428,331 is: 642,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,732.18 : 1,175,931.09 = 428,331 : x
  2. Step 2: Convert to fraction form
    783,732.18/1,175,931.09 = 428,331/x
  3. Step 3: Cross multiply
    783,732.18x = 1,175,931.09 × 428,331
  4. Step 4: Simplify right side
    783,732.18x = 503,687,739,710.79
  5. Step 5: Solve for x
    x = 503,687,739,710.79/783,732.18
  6. Step 6: Final answer
    x = 642,678.40

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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.