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Finding the Fourth Proportional to 574,939.90, 787,670.51 and 553,391.47

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Solution

The fourth proportional to 574,939.90, 787,670.51 and 553,391.47 is: 758,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,939.90 : 787,670.51 = 553,391.47 : x
  2. Step 2: Convert to fraction form
    574,939.90/787,670.51 = 553,391.47/x
  3. Step 3: Cross multiply
    574,939.90x = 787,670.51 × 553,391.47
  4. Step 4: Simplify right side
    574,939.90x = 435,890,141,404.55
  5. Step 5: Solve for x
    x = 435,890,141,404.55/574,939.90
  6. Step 6: Final answer
    x = 758,149.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.