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Finding the Fourth Proportional to 631,363.48, 871,568.44 and 402,235.00

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Solution

The fourth proportional to 631,363.48, 871,568.44 and 402,235.00 is: 555,267.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,363.48 : 871,568.44 = 402,235.00 : x
  2. Step 2: Convert to fraction form
    631,363.48/871,568.44 = 402,235.00/x
  3. Step 3: Cross multiply
    631,363.48x = 871,568.44 × 402,235.00
  4. Step 4: Simplify right side
    631,363.48x = 350,575,328,278.89
  5. Step 5: Solve for x
    x = 350,575,328,278.89/631,363.48
  6. Step 6: Final answer
    x = 555,267.04

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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.