Home / 688,613.40-1,032,920.10-215,443.80

Finding the Fourth Proportional to 688,613.40, 1,032,920.10 and 215,443.80

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Solution

The fourth proportional to 688,613.40, 1,032,920.10 and 215,443.80 is: 323,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,613.40 : 1,032,920.10 = 215,443.80 : x
  2. Step 2: Convert to fraction form
    688,613.40/1,032,920.10 = 215,443.80/x
  3. Step 3: Cross multiply
    688,613.40x = 1,032,920.10 × 215,443.80
  4. Step 4: Simplify right side
    688,613.40x = 222,536,231,440.38
  5. Step 5: Solve for x
    x = 222,536,231,440.38/688,613.40
  6. Step 6: Final answer
    x = 323,165.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.