Home / 840,552.45-1,159,915.10-478,064.49

Finding the Fourth Proportional to 840,552.45, 1,159,915.10 and 478,064.49

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Solution

The fourth proportional to 840,552.45, 1,159,915.10 and 478,064.49 is: 659,702.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,552.45 : 1,159,915.10 = 478,064.49 : x
  2. Step 2: Convert to fraction form
    840,552.45/1,159,915.10 = 478,064.49/x
  3. Step 3: Cross multiply
    840,552.45x = 1,159,915.10 × 478,064.49
  4. Step 4: Simplify right side
    840,552.45x = 554,514,220,724.80
  5. Step 5: Solve for x
    x = 554,514,220,724.80/840,552.45
  6. Step 6: Final answer
    x = 659,702.11

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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.