Home / 771,805.40-1,157,708.10-210,839.90

Finding the Fourth Proportional to 771,805.40, 1,157,708.10 and 210,839.90

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Solution

The fourth proportional to 771,805.40, 1,157,708.10 and 210,839.90 is: 316,259.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,805.40 : 1,157,708.10 = 210,839.90 : x
  2. Step 2: Convert to fraction form
    771,805.40/1,157,708.10 = 210,839.90/x
  3. Step 3: Cross multiply
    771,805.40x = 1,157,708.10 × 210,839.90
  4. Step 4: Simplify right side
    771,805.40x = 244,091,060,033.19
  5. Step 5: Solve for x
    x = 244,091,060,033.19/771,805.40
  6. Step 6: Final answer
    x = 316,259.85

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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.