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Finding the Fourth Proportional to 631,527.86, 871,498.26 and 345,041.79

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Solution

The fourth proportional to 631,527.86, 871,498.26 and 345,041.79 is: 476,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,527.86 : 871,498.26 = 345,041.79 : x
  2. Step 2: Convert to fraction form
    631,527.86/871,498.26 = 345,041.79/x
  3. Step 3: Cross multiply
    631,527.86x = 871,498.26 × 345,041.79
  4. Step 4: Simplify right side
    631,527.86x = 300,703,319,612.29
  5. Step 5: Solve for x
    x = 300,703,319,612.29/631,527.86
  6. Step 6: Final answer
    x = 476,152.11

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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.