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Finding the Fourth Proportional to 906,977,168.80, 1,360,465,753.20 and 725,578,640.80

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Solution

The fourth proportional to 906,977,168.80, 1,360,465,753.20 and 725,578,640.80 is: 1,088,367,961.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,977,168.80 : 1,360,465,753.20 = 725,578,640.80 : x
  2. Step 2: Convert to fraction form
    906,977,168.80/1,360,465,753.20 = 725,578,640.80/x
  3. Step 3: Cross multiply
    906,977,168.80x = 1,360,465,753.20 × 725,578,640.80
  4. Step 4: Simplify right side
    906,977,168.80x = 987,124,892,061,804,160
  5. Step 5: Solve for x
    x = 987,124,892,061,804,160/906,977,168.80
  6. Step 6: Final answer
    x = 1,088,367,961.20

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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.