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Finding the Fourth Proportional to 631,483.20, 871,398.54 and 359,497.08

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Solution

The fourth proportional to 631,483.20, 871,398.54 and 359,497.08 is: 496,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,483.20 : 871,398.54 = 359,497.08 : x
  2. Step 2: Convert to fraction form
    631,483.20/871,398.54 = 359,497.08/x
  3. Step 3: Cross multiply
    631,483.20x = 871,398.54 × 359,497.08
  4. Step 4: Simplify right side
    631,483.20x = 313,265,230,646.26
  5. Step 5: Solve for x
    x = 313,265,230,646.26/631,483.20
  6. Step 6: Final answer
    x = 496,078.49

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1.5x scale

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.