Home / 991,386-1,368,120.98-538,677

Finding the Fourth Proportional to 991,386, 1,368,120.98 and 538,677

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Solution

The fourth proportional to 991,386, 1,368,120.98 and 538,677 is: 743,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,386 : 1,368,120.98 = 538,677 : x
  2. Step 2: Convert to fraction form
    991,386/1,368,120.98 = 538,677/x
  3. Step 3: Cross multiply
    991,386x = 1,368,120.98 × 538,677
  4. Step 4: Simplify right side
    991,386x = 736,975,305,143.46
  5. Step 5: Solve for x
    x = 736,975,305,143.46/991,386
  6. Step 6: Final answer
    x = 743,378.77

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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.