Home / 390,925.20-586,443.70-124,688.74

Finding the Fourth Proportional to 390,925.20, 586,443.70 and 124,688.74

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Solution

The fourth proportional to 390,925.20, 586,443.70 and 124,688.74 is: 187,050.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,925.20 : 586,443.70 = 124,688.74 : x
  2. Step 2: Convert to fraction form
    390,925.20/586,443.70 = 124,688.74/x
  3. Step 3: Cross multiply
    390,925.20x = 586,443.70 × 124,688.74
  4. Step 4: Simplify right side
    390,925.20x = 73,122,926,033.94
  5. Step 5: Solve for x
    x = 73,122,926,033.94/390,925.20
  6. Step 6: Final answer
    x = 187,050.94

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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.