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Finding the Fourth Proportional to 982,870.09, 1,356,779.22 and 660,767

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Solution

The fourth proportional to 982,870.09, 1,356,779.22 and 660,767 is: 912,139.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    982,870.09 : 1,356,779.22 = 660,767 : x
  2. Step 2: Convert to fraction form
    982,870.09/1,356,779.22 = 660,767/x
  3. Step 3: Cross multiply
    982,870.09x = 1,356,779.22 × 660,767
  4. Step 4: Simplify right side
    982,870.09x = 896,514,934,861.74
  5. Step 5: Solve for x
    x = 896,514,934,861.74/982,870.09
  6. Step 6: Final answer
    x = 912,139.81

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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.