Home / 920,148.20-1,380,222.30-521,567.45

Finding the Fourth Proportional to 920,148.20, 1,380,222.30 and 521,567.45

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Solution

The fourth proportional to 920,148.20, 1,380,222.30 and 521,567.45 is: 782,351.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,148.20 : 1,380,222.30 = 521,567.45 : x
  2. Step 2: Convert to fraction form
    920,148.20/1,380,222.30 = 521,567.45/x
  3. Step 3: Cross multiply
    920,148.20x = 1,380,222.30 × 521,567.45
  4. Step 4: Simplify right side
    920,148.20x = 719,879,025,444.14
  5. Step 5: Solve for x
    x = 719,879,025,444.14/920,148.20
  6. Step 6: Final answer
    x = 782,351.18

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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.