Home / 1,312,718.32-1,969,077.28-315,446.32

Finding the Fourth Proportional to 1,312,718.32, 1,969,077.28 and 315,446.32

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Solution

The fourth proportional to 1,312,718.32, 1,969,077.28 and 315,446.32 is: 473,169.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,718.32 : 1,969,077.28 = 315,446.32 : x
  2. Step 2: Convert to fraction form
    1,312,718.32/1,969,077.28 = 315,446.32/x
  3. Step 3: Cross multiply
    1,312,718.32x = 1,969,077.28 × 315,446.32
  4. Step 4: Simplify right side
    1,312,718.32x = 621,138,181,771.61
  5. Step 5: Solve for x
    x = 621,138,181,771.61/1,312,718.32
  6. Step 6: Final answer
    x = 473,169.43

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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.