Home / 492,619.29-679,822.16-288,621.39

Finding the Fourth Proportional to 492,619.29, 679,822.16 and 288,621.39

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Solution

The fourth proportional to 492,619.29, 679,822.16 and 288,621.39 is: 398,301.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,619.29 : 679,822.16 = 288,621.39 : x
  2. Step 2: Convert to fraction form
    492,619.29/679,822.16 = 288,621.39/x
  3. Step 3: Cross multiply
    492,619.29x = 679,822.16 × 288,621.39
  4. Step 4: Simplify right side
    492,619.29x = 196,211,215,328.90
  5. Step 5: Solve for x
    x = 196,211,215,328.90/492,619.29
  6. Step 6: Final answer
    x = 398,301.93

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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.