Home / 414,463.20-621,387.60-281,010.40

Finding the Fourth Proportional to 414,463.20, 621,387.60 and 281,010.40

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Solution

The fourth proportional to 414,463.20, 621,387.60 and 281,010.40 is: 421,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,463.20 : 621,387.60 = 281,010.40 : x
  2. Step 2: Convert to fraction form
    414,463.20/621,387.60 = 281,010.40/x
  3. Step 3: Cross multiply
    414,463.20x = 621,387.60 × 281,010.40
  4. Step 4: Simplify right side
    414,463.20x = 174,616,378,031.04
  5. Step 5: Solve for x
    x = 174,616,378,031.04/414,463.20
  6. Step 6: Final answer
    x = 421,307.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.