Home / 453,316.20-679,974.30-408,215.40

Finding the Fourth Proportional to 453,316.20, 679,974.30 and 408,215.40

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Solution

The fourth proportional to 453,316.20, 679,974.30 and 408,215.40 is: 612,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,316.20 : 679,974.30 = 408,215.40 : x
  2. Step 2: Convert to fraction form
    453,316.20/679,974.30 = 408,215.40/x
  3. Step 3: Cross multiply
    453,316.20x = 679,974.30 × 408,215.40
  4. Step 4: Simplify right side
    453,316.20x = 277,575,980,864.22
  5. Step 5: Solve for x
    x = 277,575,980,864.22/453,316.20
  6. Step 6: Final answer
    x = 612,323.10

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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.