Home / 398,681,200.80-598,021,801.20-355,683,031.20

Finding the Fourth Proportional to 398,681,200.80, 598,021,801.20 and 355,683,031.20

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Solution

The fourth proportional to 398,681,200.80, 598,021,801.20 and 355,683,031.20 is: 533,524,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,681,200.80 : 598,021,801.20 = 355,683,031.20 : x
  2. Step 2: Convert to fraction form
    398,681,200.80/598,021,801.20 = 355,683,031.20/x
  3. Step 3: Cross multiply
    398,681,200.80x = 598,021,801.20 × 355,683,031.20
  4. Step 4: Simplify right side
    398,681,200.80x = 212,706,206,974,499,808
  5. Step 5: Solve for x
    x = 212,706,206,974,499,808/398,681,200.80
  6. Step 6: Final answer
    x = 533,524,546.80

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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.