Home / 442,871,465.40-664,307,198.10-258,449,628.60

Finding the Fourth Proportional to 442,871,465.40, 664,307,198.10 and 258,449,628.60

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Solution

The fourth proportional to 442,871,465.40, 664,307,198.10 and 258,449,628.60 is: 387,674,442.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,871,465.40 : 664,307,198.10 = 258,449,628.60 : x
  2. Step 2: Convert to fraction form
    442,871,465.40/664,307,198.10 = 258,449,628.60/x
  3. Step 3: Cross multiply
    442,871,465.40x = 664,307,198.10 × 258,449,628.60
  4. Step 4: Simplify right side
    442,871,465.40x = 171,689,948,625,251,616
  5. Step 5: Solve for x
    x = 171,689,948,625,251,616/442,871,465.40
  6. Step 6: Final answer
    x = 387,674,442.90

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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.