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Finding the Fourth Proportional to 497,847.76, 687,011.60 and 271,488.40

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Solution

The fourth proportional to 497,847.76, 687,011.60 and 271,488.40 is: 374,644.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,847.76 : 687,011.60 = 271,488.40 : x
  2. Step 2: Convert to fraction form
    497,847.76/687,011.60 = 271,488.40/x
  3. Step 3: Cross multiply
    497,847.76x = 687,011.60 × 271,488.40
  4. Step 4: Simplify right side
    497,847.76x = 186,515,680,065.44
  5. Step 5: Solve for x
    x = 186,515,680,065.44/497,847.76
  6. Step 6: Final answer
    x = 374,644.01

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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.