Home / 386,145,980.10-579,218,970.15-354,401,237.70

Finding the Fourth Proportional to 386,145,980.10, 579,218,970.15 and 354,401,237.70

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Solution

The fourth proportional to 386,145,980.10, 579,218,970.15 and 354,401,237.70 is: 531,601,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,145,980.10 : 579,218,970.15 = 354,401,237.70 : x
  2. Step 2: Convert to fraction form
    386,145,980.10/579,218,970.15 = 354,401,237.70/x
  3. Step 3: Cross multiply
    386,145,980.10x = 579,218,970.15 × 354,401,237.70
  4. Step 4: Simplify right side
    386,145,980.10x = 205,275,919,920,479,328
  5. Step 5: Solve for x
    x = 205,275,919,920,479,328/386,145,980.10
  6. Step 6: Final answer
    x = 531,601,856.55

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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.