Home / 840,552.57-1,159,915.28-478,064.61

Finding the Fourth Proportional to 840,552.57, 1,159,915.28 and 478,064.61

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Solution

The fourth proportional to 840,552.57, 1,159,915.28 and 478,064.61 is: 659,702.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,552.57 : 1,159,915.28 = 478,064.61 : x
  2. Step 2: Convert to fraction form
    840,552.57/1,159,915.28 = 478,064.61/x
  3. Step 3: Cross multiply
    840,552.57x = 1,159,915.28 × 478,064.61
  4. Step 4: Simplify right side
    840,552.57x = 554,514,443,575.92
  5. Step 5: Solve for x
    x = 554,514,443,575.92/840,552.57
  6. Step 6: Final answer
    x = 659,702.28

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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.