Home / 688,713.40-1,033,070.10-215,543.80

Finding the Fourth Proportional to 688,713.40, 1,033,070.10 and 215,543.80

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Solution

The fourth proportional to 688,713.40, 1,033,070.10 and 215,543.80 is: 323,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,713.40 : 1,033,070.10 = 215,543.80 : x
  2. Step 2: Convert to fraction form
    688,713.40/1,033,070.10 = 215,543.80/x
  3. Step 3: Cross multiply
    688,713.40x = 1,033,070.10 × 215,543.80
  4. Step 4: Simplify right side
    688,713.40x = 222,671,855,020.38
  5. Step 5: Solve for x
    x = 222,671,855,020.38/688,713.40
  6. Step 6: Final answer
    x = 323,315.70

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Similar ratio
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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.