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Finding the Fourth Proportional to 449,079.93, 618,677.60 and 312,867.50

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Solution

The fourth proportional to 449,079.93, 618,677.60 and 312,867.50 is: 431,023.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,079.93 : 618,677.60 = 312,867.50 : x
  2. Step 2: Convert to fraction form
    449,079.93/618,677.60 = 312,867.50/x
  3. Step 3: Cross multiply
    449,079.93x = 618,677.60 × 312,867.50
  4. Step 4: Simplify right side
    449,079.93x = 193,564,109,360.28
  5. Step 5: Solve for x
    x = 193,564,109,360.28/449,079.93
  6. Step 6: Final answer
    x = 431,023.74

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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.