Home / 991,427.92-1,368,167.96-538,718.96

Finding the Fourth Proportional to 991,427.92, 1,368,167.96 and 538,718.96

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Solution

The fourth proportional to 991,427.92, 1,368,167.96 and 538,718.96 is: 743,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,427.92 : 1,368,167.96 = 538,718.96 : x
  2. Step 2: Convert to fraction form
    991,427.92/1,368,167.96 = 538,718.96/x
  3. Step 3: Cross multiply
    991,427.92x = 1,368,167.96 × 538,718.96
  4. Step 4: Simplify right side
    991,427.92x = 737,058,020,516.52
  5. Step 5: Solve for x
    x = 737,058,020,516.52/991,427.92
  6. Step 6: Final answer
    x = 743,430.77

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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.