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Finding the Fourth Proportional to 398,646,486.80, 597,969,730.20 and 374,460,016.40

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Solution

The fourth proportional to 398,646,486.80, 597,969,730.20 and 374,460,016.40 is: 561,690,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,646,486.80 : 597,969,730.20 = 374,460,016.40 : x
  2. Step 2: Convert to fraction form
    398,646,486.80/597,969,730.20 = 374,460,016.40/x
  3. Step 3: Cross multiply
    398,646,486.80x = 597,969,730.20 × 374,460,016.40
  4. Step 4: Simplify right side
    398,646,486.80x = 223,915,754,977,395,584
  5. Step 5: Solve for x
    x = 223,915,754,977,395,584/398,646,486.80
  6. Step 6: Final answer
    x = 561,690,024.60

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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.