Home / 885,739,390.20-1,328,609,085.30-656,156,878.20

Finding the Fourth Proportional to 885,739,390.20, 1,328,609,085.30 and 656,156,878.20

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Solution

The fourth proportional to 885,739,390.20, 1,328,609,085.30 and 656,156,878.20 is: 984,235,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,739,390.20 : 1,328,609,085.30 = 656,156,878.20 : x
  2. Step 2: Convert to fraction form
    885,739,390.20/1,328,609,085.30 = 656,156,878.20/x
  3. Step 3: Cross multiply
    885,739,390.20x = 1,328,609,085.30 × 656,156,878.20
  4. Step 4: Simplify right side
    885,739,390.20x = 871,775,989,758,605,568
  5. Step 5: Solve for x
    x = 871,775,989,758,605,568/885,739,390.20
  6. Step 6: Final answer
    x = 984,235,317.30

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Double scale
Find fourth proportional to 885,739,391.20, 1,328,609,086.80 and 656,156,879.20
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.