Home / 1,242,118.20-1,861,848.42-642,475.62

Finding the Fourth Proportional to 1,242,118.20, 1,861,848.42 and 642,475.62

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Solution

The fourth proportional to 1,242,118.20, 1,861,848.42 and 642,475.62 is: 963,026.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,118.20 : 1,861,848.42 = 642,475.62 : x
  2. Step 2: Convert to fraction form
    1,242,118.20/1,861,848.42 = 642,475.62/x
  3. Step 3: Cross multiply
    1,242,118.20x = 1,861,848.42 × 642,475.62
  4. Step 4: Simplify right side
    1,242,118.20x = 1,196,192,217,985.52
  5. Step 5: Solve for x
    x = 1,196,192,217,985.52/1,242,118.20
  6. Step 6: Final answer
    x = 963,026.08

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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.