Home / 991,002.15-1,486,724.76-317,123.91

Finding the Fourth Proportional to 991,002.15, 1,486,724.76 and 317,123.91

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Solution

The fourth proportional to 991,002.15, 1,486,724.76 and 317,123.91 is: 475,756.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,002.15 : 1,486,724.76 = 317,123.91 : x
  2. Step 2: Convert to fraction form
    991,002.15/1,486,724.76 = 317,123.91/x
  3. Step 3: Cross multiply
    991,002.15x = 1,486,724.76 × 317,123.91
  4. Step 4: Simplify right side
    991,002.15x = 471,475,968,985.01
  5. Step 5: Solve for x
    x = 471,475,968,985.01/991,002.15
  6. Step 6: Final answer
    x = 475,756.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.