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Finding the Fourth Proportional to 715,347.95, 987,266 and 429,025.55

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Solution

The fourth proportional to 715,347.95, 987,266 and 429,025.55 is: 592,106.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,347.95 : 987,266 = 429,025.55 : x
  2. Step 2: Convert to fraction form
    715,347.95/987,266 = 429,025.55/x
  3. Step 3: Cross multiply
    715,347.95x = 987,266 × 429,025.55
  4. Step 4: Simplify right side
    715,347.95x = 423,562,338,646.30
  5. Step 5: Solve for x
    x = 423,562,338,646.30/715,347.95
  6. Step 6: Final answer
    x = 592,106.73

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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.