Home / 1,242,439.12-1,710,334.74-919,540.72

Finding the Fourth Proportional to 1,242,439.12, 1,710,334.74 and 919,540.72

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Solution

The fourth proportional to 1,242,439.12, 1,710,334.74 and 919,540.72 is: 1,265,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,439.12 : 1,710,334.74 = 919,540.72 : x
  2. Step 2: Convert to fraction form
    1,242,439.12/1,710,334.74 = 919,540.72/x
  3. Step 3: Cross multiply
    1,242,439.12x = 1,710,334.74 × 919,540.72
  4. Step 4: Simplify right side
    1,242,439.12x = 1,572,722,438,260.61
  5. Step 5: Solve for x
    x = 1,572,722,438,260.61/1,242,439.12
  6. Step 6: Final answer
    x = 1,265,834.61

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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.