Home / 688,034.80-1,031,648.28-208,118.20

Finding the Fourth Proportional to 688,034.80, 1,031,648.28 and 208,118.20

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Solution

The fourth proportional to 688,034.80, 1,031,648.28 and 208,118.20 is: 312,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,034.80 : 1,031,648.28 = 208,118.20 : x
  2. Step 2: Convert to fraction form
    688,034.80/1,031,648.28 = 208,118.20/x
  3. Step 3: Cross multiply
    688,034.80x = 1,031,648.28 × 208,118.20
  4. Step 4: Simplify right side
    688,034.80x = 214,704,783,066.70
  5. Step 5: Solve for x
    x = 214,704,783,066.70/688,034.80
  6. Step 6: Final answer
    x = 312,055.12

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Double scale
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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.