Home / 772,818.72-1,066,490.19-428,642.70

Finding the Fourth Proportional to 772,818.72, 1,066,490.19 and 428,642.70

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Solution

The fourth proportional to 772,818.72, 1,066,490.19 and 428,642.70 is: 591,527.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,818.72 : 1,066,490.19 = 428,642.70 : x
  2. Step 2: Convert to fraction form
    772,818.72/1,066,490.19 = 428,642.70/x
  3. Step 3: Cross multiply
    772,818.72x = 1,066,490.19 × 428,642.70
  4. Step 4: Simplify right side
    772,818.72x = 457,143,234,565.11
  5. Step 5: Solve for x
    x = 457,143,234,565.11/772,818.72
  6. Step 6: Final answer
    x = 591,527.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.