Home / 1,009,107,249.40-1,513,660,874.10-660,428,809.30

Finding the Fourth Proportional to 1,009,107,249.40, 1,513,660,874.10 and 660,428,809.30

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Solution

The fourth proportional to 1,009,107,249.40, 1,513,660,874.10 and 660,428,809.30 is: 990,643,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009,107,249.40 : 1,513,660,874.10 = 660,428,809.30 : x
  2. Step 2: Convert to fraction form
    1,009,107,249.40/1,513,660,874.10 = 660,428,809.30/x
  3. Step 3: Cross multiply
    1,009,107,249.40x = 1,513,660,874.10 × 660,428,809.30
  4. Step 4: Simplify right side
    1,009,107,249.40x = 999,665,248,765,860,096
  5. Step 5: Solve for x
    x = 999,665,248,765,860,096/1,009,107,249.40
  6. Step 6: Final answer
    x = 990,643,213.95

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Double scale
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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.