Home / 398,574,291.20-597,955,915.20-204,515,657.60

Finding the Fourth Proportional to 398,574,291.20, 597,955,915.20 and 204,515,657.60

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Solution

The fourth proportional to 398,574,291.20, 597,955,915.20 and 204,515,657.60 is: 306,821,964.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,574,291.20 : 597,955,915.20 = 204,515,657.60 : x
  2. Step 2: Convert to fraction form
    398,574,291.20/597,955,915.20 = 204,515,657.60/x
  3. Step 3: Cross multiply
    398,574,291.20x = 597,955,915.20 × 204,515,657.60
  4. Step 4: Simplify right side
    398,574,291.20x = 122,291,347,212,937,840
  5. Step 5: Solve for x
    x = 122,291,347,212,937,840/398,574,291.20
  6. Step 6: Final answer
    x = 306,821,964.97

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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.