Home / 398,736,267.80-598,104,401.70-389,778,315.80

Finding the Fourth Proportional to 398,736,267.80, 598,104,401.70 and 389,778,315.80

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Solution

The fourth proportional to 398,736,267.80, 598,104,401.70 and 389,778,315.80 is: 584,667,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,736,267.80 : 598,104,401.70 = 389,778,315.80 : x
  2. Step 2: Convert to fraction form
    398,736,267.80/598,104,401.70 = 389,778,315.80/x
  3. Step 3: Cross multiply
    398,736,267.80x = 598,104,401.70 × 389,778,315.80
  4. Step 4: Simplify right side
    398,736,267.80x = 233,128,126,367,192,672
  5. Step 5: Solve for x
    x = 233,128,126,367,192,672/398,736,267.80
  6. Step 6: Final answer
    x = 584,667,473.70

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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.