Home / 910,129.28-1,256,228.22-528,279.08

Finding the Fourth Proportional to 910,129.28, 1,256,228.22 and 528,279.08

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Solution

The fourth proportional to 910,129.28, 1,256,228.22 and 528,279.08 is: 729,170.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,129.28 : 1,256,228.22 = 528,279.08 : x
  2. Step 2: Convert to fraction form
    910,129.28/1,256,228.22 = 528,279.08/x
  3. Step 3: Cross multiply
    910,129.28x = 1,256,228.22 × 528,279.08
  4. Step 4: Simplify right side
    910,129.28x = 663,639,088,331.64
  5. Step 5: Solve for x
    x = 663,639,088,331.64/910,129.28
  6. Step 6: Final answer
    x = 729,170.13

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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.