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Finding the Fourth Proportional to 611,698.80, 914,956.20 and 548,972.40

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Solution

The fourth proportional to 611,698.80, 914,956.20 and 548,972.40 is: 821,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,698.80 : 914,956.20 = 548,972.40 : x
  2. Step 2: Convert to fraction form
    611,698.80/914,956.20 = 548,972.40/x
  3. Step 3: Cross multiply
    611,698.80x = 914,956.20 × 548,972.40
  4. Step 4: Simplify right side
    611,698.80x = 502,285,701,008.88
  5. Step 5: Solve for x
    x = 502,285,701,008.88/611,698.80
  6. Step 6: Final answer
    x = 821,132.40

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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.