Home / 390,724.08-586,174.50-124,499.76

Finding the Fourth Proportional to 390,724.08, 586,174.50 and 124,499.76

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Solution

The fourth proportional to 390,724.08, 586,174.50 and 124,499.76 is: 186,777.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,724.08 : 586,174.50 = 124,499.76 : x
  2. Step 2: Convert to fraction form
    390,724.08/586,174.50 = 124,499.76/x
  3. Step 3: Cross multiply
    390,724.08x = 586,174.50 × 124,499.76
  4. Step 4: Simplify right side
    390,724.08x = 72,978,584,568.12
  5. Step 5: Solve for x
    x = 72,978,584,568.12/390,724.08
  6. Step 6: Final answer
    x = 186,777.80

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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.