Home / 912,659.40-1,369,053.90-281,572.20

Finding the Fourth Proportional to 912,659.40, 1,369,053.90 and 281,572.20

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Solution

The fourth proportional to 912,659.40, 1,369,053.90 and 281,572.20 is: 422,378.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,659.40 : 1,369,053.90 = 281,572.20 : x
  2. Step 2: Convert to fraction form
    912,659.40/1,369,053.90 = 281,572.20/x
  3. Step 3: Cross multiply
    912,659.40x = 1,369,053.90 × 281,572.20
  4. Step 4: Simplify right side
    912,659.40x = 385,487,518,541.58
  5. Step 5: Solve for x
    x = 385,487,518,541.58/912,659.40
  6. Step 6: Final answer
    x = 422,378.29

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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.