Home / 495,005.40-742,508.10-121,028.40

Finding the Fourth Proportional to 495,005.40, 742,508.10 and 121,028.40

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Solution

The fourth proportional to 495,005.40, 742,508.10 and 121,028.40 is: 181,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,005.40 : 742,508.10 = 121,028.40 : x
  2. Step 2: Convert to fraction form
    495,005.40/742,508.10 = 121,028.40/x
  3. Step 3: Cross multiply
    495,005.40x = 742,508.10 × 121,028.40
  4. Step 4: Simplify right side
    495,005.40x = 89,864,567,330.04
  5. Step 5: Solve for x
    x = 89,864,567,330.04/495,005.40
  6. Step 6: Final answer
    x = 181,542.60

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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.