Home / 742,153.28-1,024,171.92-402,621.50

Finding the Fourth Proportional to 742,153.28, 1,024,171.92 and 402,621.50

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Solution

The fourth proportional to 742,153.28, 1,024,171.92 and 402,621.50 is: 555,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,153.28 : 1,024,171.92 = 402,621.50 : x
  2. Step 2: Convert to fraction form
    742,153.28/1,024,171.92 = 402,621.50/x
  3. Step 3: Cross multiply
    742,153.28x = 1,024,171.92 × 402,621.50
  4. Step 4: Simplify right side
    742,153.28x = 412,353,634,688.28
  5. Step 5: Solve for x
    x = 412,353,634,688.28/742,153.28
  6. Step 6: Final answer
    x = 555,617.88

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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.