Home / 763,501.60-1,145,252.40-290,161.90

Finding the Fourth Proportional to 763,501.60, 1,145,252.40 and 290,161.90

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Solution

The fourth proportional to 763,501.60, 1,145,252.40 and 290,161.90 is: 435,242.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,501.60 : 1,145,252.40 = 290,161.90 : x
  2. Step 2: Convert to fraction form
    763,501.60/1,145,252.40 = 290,161.90/x
  3. Step 3: Cross multiply
    763,501.60x = 1,145,252.40 × 290,161.90
  4. Step 4: Simplify right side
    763,501.60x = 332,308,612,363.56
  5. Step 5: Solve for x
    x = 332,308,612,363.56/763,501.60
  6. Step 6: Final answer
    x = 435,242.85

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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.