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Finding the Fourth Proportional to 553,759.20, 830,638.80 and 548,510.40

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Solution

The fourth proportional to 553,759.20, 830,638.80 and 548,510.40 is: 822,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,759.20 : 830,638.80 = 548,510.40 : x
  2. Step 2: Convert to fraction form
    553,759.20/830,638.80 = 548,510.40/x
  3. Step 3: Cross multiply
    553,759.20x = 830,638.80 × 548,510.40
  4. Step 4: Simplify right side
    553,759.20x = 455,614,020,443.52
  5. Step 5: Solve for x
    x = 455,614,020,443.52/553,759.20
  6. Step 6: Final answer
    x = 822,765.60

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Similar ratio
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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.