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Finding the Fourth Proportional to 631,347.60, 871,043.58 and 359,347.44

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Solution

The fourth proportional to 631,347.60, 871,043.58 and 359,347.44 is: 495,776.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,347.60 : 871,043.58 = 359,347.44 : x
  2. Step 2: Convert to fraction form
    631,347.60/871,043.58 = 359,347.44/x
  3. Step 3: Cross multiply
    631,347.60x = 871,043.58 × 359,347.44
  4. Step 4: Simplify right side
    631,347.60x = 313,007,280,601.44
  5. Step 5: Solve for x
    x = 313,007,280,601.44/631,347.60
  6. Step 6: Final answer
    x = 495,776.46

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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.