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Finding the Fourth Proportional to 688,677.30, 950,102.55 and 398,235.42

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Solution

The fourth proportional to 688,677.30, 950,102.55 and 398,235.42 is: 549,407.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,677.30 : 950,102.55 = 398,235.42 : x
  2. Step 2: Convert to fraction form
    688,677.30/950,102.55 = 398,235.42/x
  3. Step 3: Cross multiply
    688,677.30x = 950,102.55 × 398,235.42
  4. Step 4: Simplify right side
    688,677.30x = 378,364,488,042.32
  5. Step 5: Solve for x
    x = 378,364,488,042.32/688,677.30
  6. Step 6: Final answer
    x = 549,407.52

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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.