Home / 874,726.90-1,207,128.73-487,566.87

Finding the Fourth Proportional to 874,726.90, 1,207,128.73 and 487,566.87

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Solution

The fourth proportional to 874,726.90, 1,207,128.73 and 487,566.87 is: 672,845.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,726.90 : 1,207,128.73 = 487,566.87 : x
  2. Step 2: Convert to fraction form
    874,726.90/1,207,128.73 = 487,566.87/x
  3. Step 3: Cross multiply
    874,726.90x = 1,207,128.73 × 487,566.87
  4. Step 4: Simplify right side
    874,726.90x = 588,555,976,573.18
  5. Step 5: Solve for x
    x = 588,555,976,573.18/874,726.90
  6. Step 6: Final answer
    x = 672,845.41

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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.