Home / 913,445.60-1,370,168.40-440,178.80

Finding the Fourth Proportional to 913,445.60, 1,370,168.40 and 440,178.80

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Solution

The fourth proportional to 913,445.60, 1,370,168.40 and 440,178.80 is: 660,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,445.60 : 1,370,168.40 = 440,178.80 : x
  2. Step 2: Convert to fraction form
    913,445.60/1,370,168.40 = 440,178.80/x
  3. Step 3: Cross multiply
    913,445.60x = 1,370,168.40 × 440,178.80
  4. Step 4: Simplify right side
    913,445.60x = 603,119,082,109.92
  5. Step 5: Solve for x
    x = 603,119,082,109.92/913,445.60
  6. Step 6: Final answer
    x = 660,268.20

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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.