Home / 492,260.36-679,381.11-288,389.07

Finding the Fourth Proportional to 492,260.36, 679,381.11 and 288,389.07

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Solution

The fourth proportional to 492,260.36, 679,381.11 and 288,389.07 is: 398,013.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,260.36 : 679,381.11 = 288,389.07 : x
  2. Step 2: Convert to fraction form
    492,260.36/679,381.11 = 288,389.07/x
  3. Step 3: Cross multiply
    492,260.36x = 679,381.11 × 288,389.07
  4. Step 4: Simplify right side
    492,260.36x = 195,926,086,488.47
  5. Step 5: Solve for x
    x = 195,926,086,488.47/492,260.36
  6. Step 6: Final answer
    x = 398,013.13

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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.