Home / 450,081.40-621,381.78-280,545.16

Finding the Fourth Proportional to 450,081.40, 621,381.78 and 280,545.16

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Solution

The fourth proportional to 450,081.40, 621,381.78 and 280,545.16 is: 387,320.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,081.40 : 621,381.78 = 280,545.16 : x
  2. Step 2: Convert to fraction form
    450,081.40/621,381.78 = 280,545.16/x
  3. Step 3: Cross multiply
    450,081.40x = 621,381.78 × 280,545.16
  4. Step 4: Simplify right side
    450,081.40x = 174,325,650,891.19
  5. Step 5: Solve for x
    x = 174,325,650,891.19/450,081.40
  6. Step 6: Final answer
    x = 387,320.27

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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.