Home / 398,736,266.80-598,104,400.20-389,778,314.80

Finding the Fourth Proportional to 398,736,266.80, 598,104,400.20 and 389,778,314.80

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Solution

The fourth proportional to 398,736,266.80, 598,104,400.20 and 389,778,314.80 is: 584,667,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,736,266.80 : 598,104,400.20 = 389,778,314.80 : x
  2. Step 2: Convert to fraction form
    398,736,266.80/598,104,400.20 = 389,778,314.80/x
  3. Step 3: Cross multiply
    398,736,266.80x = 598,104,400.20 × 389,778,314.80
  4. Step 4: Simplify right side
    398,736,266.80x = 233,128,125,184,420,800
  5. Step 5: Solve for x
    x = 233,128,125,184,420,800/398,736,266.80
  6. Step 6: Final answer
    x = 584,667,472.20

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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.