Home / 866,058,000.30-1,299,087,000.45-858,405,249.90

Finding the Fourth Proportional to 866,058,000.30, 1,299,087,000.45 and 858,405,249.90

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Solution

The fourth proportional to 866,058,000.30, 1,299,087,000.45 and 858,405,249.90 is: 1,287,607,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,058,000.30 : 1,299,087,000.45 = 858,405,249.90 : x
  2. Step 2: Convert to fraction form
    866,058,000.30/1,299,087,000.45 = 858,405,249.90/x
  3. Step 3: Cross multiply
    866,058,000.30x = 1,299,087,000.45 × 858,405,249.90
  4. Step 4: Simplify right side
    866,058,000.30x = 1,115,143,101,263,123,712
  5. Step 5: Solve for x
    x = 1,115,143,101,263,123,712/866,058,000.30
  6. Step 6: Final answer
    x = 1,287,607,874.85

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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.