Home / 398,574,218.70-597,955,806.45-204,515,585.10

Finding the Fourth Proportional to 398,574,218.70, 597,955,806.45 and 204,515,585.10

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Solution

The fourth proportional to 398,574,218.70, 597,955,806.45 and 204,515,585.10 is: 306,821,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,574,218.70 : 597,955,806.45 = 204,515,585.10 : x
  2. Step 2: Convert to fraction form
    398,574,218.70/597,955,806.45 = 204,515,585.10/x
  3. Step 3: Cross multiply
    398,574,218.70x = 597,955,806.45 × 204,515,585.10
  4. Step 4: Simplify right side
    398,574,218.70x = 122,291,281,620,064,112
  5. Step 5: Solve for x
    x = 122,291,281,620,064,112/398,574,218.70
  6. Step 6: Final answer
    x = 306,821,856.21

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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.