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Finding the Fourth Proportional to 625,291.52, 863,199.84 and 418,915.26

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Solution

The fourth proportional to 625,291.52, 863,199.84 and 418,915.26 is: 578,302.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,291.52 : 863,199.84 = 418,915.26 : x
  2. Step 2: Convert to fraction form
    625,291.52/863,199.84 = 418,915.26/x
  3. Step 3: Cross multiply
    625,291.52x = 863,199.84 × 418,915.26
  4. Step 4: Simplify right side
    625,291.52x = 361,607,585,405.56
  5. Step 5: Solve for x
    x = 361,607,585,405.56/625,291.52
  6. Step 6: Final answer
    x = 578,302.40

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1.5x scale

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.