Home / 385,020,022.60-577,274,981.10-212,579,446.60

Finding the Fourth Proportional to 385,020,022.60, 577,274,981.10 and 212,579,446.60

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Solution

The fourth proportional to 385,020,022.60, 577,274,981.10 and 212,579,446.60 is: 318,728,348.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,020,022.60 : 577,274,981.10 = 212,579,446.60 : x
  2. Step 2: Convert to fraction form
    385,020,022.60/577,274,981.10 = 212,579,446.60/x
  3. Step 3: Cross multiply
    385,020,022.60x = 577,274,981.10 × 212,579,446.60
  4. Step 4: Simplify right side
    385,020,022.60x = 122,716,796,018,263,456
  5. Step 5: Solve for x
    x = 122,716,796,018,263,456/385,020,022.60
  6. Step 6: Final answer
    x = 318,728,348.70

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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.