Home / 688,010.70-1,032,016.05-520,049.10

Finding the Fourth Proportional to 688,010.70, 1,032,016.05 and 520,049.10

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Solution

The fourth proportional to 688,010.70, 1,032,016.05 and 520,049.10 is: 780,073.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,010.70 : 1,032,016.05 = 520,049.10 : x
  2. Step 2: Convert to fraction form
    688,010.70/1,032,016.05 = 520,049.10/x
  3. Step 3: Cross multiply
    688,010.70x = 1,032,016.05 × 520,049.10
  4. Step 4: Simplify right side
    688,010.70x = 536,699,017,988.06
  5. Step 5: Solve for x
    x = 536,699,017,988.06/688,010.70
  6. Step 6: Final answer
    x = 780,073.65

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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.