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Finding the Fourth Proportional to 554,400.30, 831,272.40 and 288,679.80

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Solution

The fourth proportional to 554,400.30, 831,272.40 and 288,679.80 is: 432,848.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,400.30 : 831,272.40 = 288,679.80 : x
  2. Step 2: Convert to fraction form
    554,400.30/831,272.40 = 288,679.80/x
  3. Step 3: Cross multiply
    554,400.30x = 831,272.40 × 288,679.80
  4. Step 4: Simplify right side
    554,400.30x = 239,971,550,177.52
  5. Step 5: Solve for x
    x = 239,971,550,177.52/554,400.30
  6. Step 6: Final answer
    x = 432,848.88

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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.