Home / 487,259.37-672,422.72-272,411.19

Finding the Fourth Proportional to 487,259.37, 672,422.72 and 272,411.19

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Solution

The fourth proportional to 487,259.37, 672,422.72 and 272,411.19 is: 375,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,259.37 : 672,422.72 = 272,411.19 : x
  2. Step 2: Convert to fraction form
    487,259.37/672,422.72 = 272,411.19/x
  3. Step 3: Cross multiply
    487,259.37x = 672,422.72 × 272,411.19
  4. Step 4: Simplify right side
    487,259.37x = 183,175,471,976.18
  5. Step 5: Solve for x
    x = 183,175,471,976.18/487,259.37
  6. Step 6: Final answer
    x = 375,930.12

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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.