Home / 1,290,151.80-1,935,446.40-391,586.40

Finding the Fourth Proportional to 1,290,151.80, 1,935,446.40 and 391,586.40

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Solution

The fourth proportional to 1,290,151.80, 1,935,446.40 and 391,586.40 is: 587,445.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,151.80 : 1,935,446.40 = 391,586.40 : x
  2. Step 2: Convert to fraction form
    1,290,151.80/1,935,446.40 = 391,586.40/x
  3. Step 3: Cross multiply
    1,290,151.80x = 1,935,446.40 × 391,586.40
  4. Step 4: Simplify right side
    1,290,151.80x = 757,894,488,168.96
  5. Step 5: Solve for x
    x = 757,894,488,168.96/1,290,151.80
  6. Step 6: Final answer
    x = 587,445.98

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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.