Home / 827,880.29-1,240,936.28-472,128.29

Finding the Fourth Proportional to 827,880.29, 1,240,936.28 and 472,128.29

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Solution

The fourth proportional to 827,880.29, 1,240,936.28 and 472,128.29 is: 707,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,880.29 : 1,240,936.28 = 472,128.29 : x
  2. Step 2: Convert to fraction form
    827,880.29/1,240,936.28 = 472,128.29/x
  3. Step 3: Cross multiply
    827,880.29x = 1,240,936.28 × 472,128.29
  4. Step 4: Simplify right side
    827,880.29x = 585,881,121,514.72
  5. Step 5: Solve for x
    x = 585,881,121,514.72/827,880.29
  6. Step 6: Final answer
    x = 707,688.21

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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.