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Finding the Fourth Proportional to 577,998.40, 866,882.40 and 278,478.40

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Solution

The fourth proportional to 577,998.40, 866,882.40 and 278,478.40 is: 417,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,998.40 : 866,882.40 = 278,478.40 : x
  2. Step 2: Convert to fraction form
    577,998.40/866,882.40 = 278,478.40/x
  3. Step 3: Cross multiply
    577,998.40x = 866,882.40 × 278,478.40
  4. Step 4: Simplify right side
    577,998.40x = 241,408,023,740.16
  5. Step 5: Solve for x
    x = 241,408,023,740.16/577,998.40
  6. Step 6: Final answer
    x = 417,662.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.