Home / 781,208.19-1,078,147.67-475,306.29

Finding the Fourth Proportional to 781,208.19, 1,078,147.67 and 475,306.29

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Solution

The fourth proportional to 781,208.19, 1,078,147.67 and 475,306.29 is: 655,971.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,208.19 : 1,078,147.67 = 475,306.29 : x
  2. Step 2: Convert to fraction form
    781,208.19/1,078,147.67 = 475,306.29/x
  3. Step 3: Cross multiply
    781,208.19x = 1,078,147.67 × 475,306.29
  4. Step 4: Simplify right side
    781,208.19x = 512,450,366,723.31
  5. Step 5: Solve for x
    x = 512,450,366,723.31/781,208.19
  6. Step 6: Final answer
    x = 655,971.57

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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.