Home / 824,401,959.20-1,236,602,938.80-279,143,493.20

Finding the Fourth Proportional to 824,401,959.20, 1,236,602,938.80 and 279,143,493.20

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Solution

The fourth proportional to 824,401,959.20, 1,236,602,938.80 and 279,143,493.20 is: 418,715,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,401,959.20 : 1,236,602,938.80 = 279,143,493.20 : x
  2. Step 2: Convert to fraction form
    824,401,959.20/1,236,602,938.80 = 279,143,493.20/x
  3. Step 3: Cross multiply
    824,401,959.20x = 1,236,602,938.80 × 279,143,493.20
  4. Step 4: Simplify right side
    824,401,959.20x = 345,189,664,038,017,792
  5. Step 5: Solve for x
    x = 345,189,664,038,017,792/824,401,959.20
  6. Step 6: Final answer
    x = 418,715,239.80

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1.5x scale

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.