Home / 1,152,139.55-1,589,952.65-642,841.92

Finding the Fourth Proportional to 1,152,139.55, 1,589,952.65 and 642,841.92

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Solution

The fourth proportional to 1,152,139.55, 1,589,952.65 and 642,841.92 is: 887,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,139.55 : 1,589,952.65 = 642,841.92 : x
  2. Step 2: Convert to fraction form
    1,152,139.55/1,589,952.65 = 642,841.92/x
  3. Step 3: Cross multiply
    1,152,139.55x = 1,589,952.65 × 642,841.92
  4. Step 4: Simplify right side
    1,152,139.55x = 1,022,088,211,020.88
  5. Step 5: Solve for x
    x = 1,022,088,211,020.88/1,152,139.55
  6. Step 6: Final answer
    x = 887,121.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.