Home / 768,528.90-1,152,793.35-395,280.90

Finding the Fourth Proportional to 768,528.90, 1,152,793.35 and 395,280.90

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Solution

The fourth proportional to 768,528.90, 1,152,793.35 and 395,280.90 is: 592,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,528.90 : 1,152,793.35 = 395,280.90 : x
  2. Step 2: Convert to fraction form
    768,528.90/1,152,793.35 = 395,280.90/x
  3. Step 3: Cross multiply
    768,528.90x = 1,152,793.35 × 395,280.90
  4. Step 4: Simplify right side
    768,528.90x = 455,677,192,902.02
  5. Step 5: Solve for x
    x = 455,677,192,902.02/768,528.90
  6. Step 6: Final answer
    x = 592,921.35

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Double scale
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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.