Home / 819,140,412.09-1,229,585,003.88-353,031,862.31

Finding the Fourth Proportional to 819,140,412.09, 1,229,585,003.88 and 353,031,862.31

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Solution

The fourth proportional to 819,140,412.09, 1,229,585,003.88 and 353,031,862.31 is: 529,924,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,140,412.09 : 1,229,585,003.88 = 353,031,862.31 : x
  2. Step 2: Convert to fraction form
    819,140,412.09/1,229,585,003.88 = 353,031,862.31/x
  3. Step 3: Cross multiply
    819,140,412.09x = 1,229,585,003.88 × 353,031,862.31
  4. Step 4: Simplify right side
    819,140,412.09x = 434,082,683,794,249,024
  5. Step 5: Solve for x
    x = 434,082,683,794,249,024/819,140,412.09
  6. Step 6: Final answer
    x = 529,924,634.88

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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.