Home / 728,715,417.40-1,093,073,126.10-658,423,487.80

Finding the Fourth Proportional to 728,715,417.40, 1,093,073,126.10 and 658,423,487.80

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Solution

The fourth proportional to 728,715,417.40, 1,093,073,126.10 and 658,423,487.80 is: 987,635,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,715,417.40 : 1,093,073,126.10 = 658,423,487.80 : x
  2. Step 2: Convert to fraction form
    728,715,417.40/1,093,073,126.10 = 658,423,487.80/x
  3. Step 3: Cross multiply
    728,715,417.40x = 1,093,073,126.10 × 658,423,487.80
  4. Step 4: Simplify right side
    728,715,417.40x = 719,705,020,107,211,136
  5. Step 5: Solve for x
    x = 719,705,020,107,211,136/728,715,417.40
  6. Step 6: Final answer
    x = 987,635,231.70

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Double scale
Find fourth proportional to 728,715,418.40, 1,093,073,127.60 and 658,423,488.80
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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.