Home / 1,247,244.30-1,721,155.20-788,605.74

Finding the Fourth Proportional to 1,247,244.30, 1,721,155.20 and 788,605.74

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Solution

The fourth proportional to 1,247,244.30, 1,721,155.20 and 788,605.74 is: 1,088,249.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,244.30 : 1,721,155.20 = 788,605.74 : x
  2. Step 2: Convert to fraction form
    1,247,244.30/1,721,155.20 = 788,605.74/x
  3. Step 3: Cross multiply
    1,247,244.30x = 1,721,155.20 × 788,605.74
  4. Step 4: Simplify right side
    1,247,244.30x = 1,357,312,870,150.85
  5. Step 5: Solve for x
    x = 1,357,312,870,150.85/1,247,244.30
  6. Step 6: Final answer
    x = 1,088,249.41

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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.