Home / 890,239.20-1,335,358.80-357,842.40

Finding the Fourth Proportional to 890,239.20, 1,335,358.80 and 357,842.40

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Solution

The fourth proportional to 890,239.20, 1,335,358.80 and 357,842.40 is: 536,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,239.20 : 1,335,358.80 = 357,842.40 : x
  2. Step 2: Convert to fraction form
    890,239.20/1,335,358.80 = 357,842.40/x
  3. Step 3: Cross multiply
    890,239.20x = 1,335,358.80 × 357,842.40
  4. Step 4: Simplify right side
    890,239.20x = 477,847,997,853.12
  5. Step 5: Solve for x
    x = 477,847,997,853.12/890,239.20
  6. Step 6: Final answer
    x = 536,763.60

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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.