Home / 521,086,067.30-719,111,266.45-282,941,289.09

Finding the Fourth Proportional to 521,086,067.30, 719,111,266.45 and 282,941,289.09

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Solution

The fourth proportional to 521,086,067.30, 719,111,266.45 and 282,941,289.09 is: 390,465,762.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,086,067.30 : 719,111,266.45 = 282,941,289.09 : x
  2. Step 2: Convert to fraction form
    521,086,067.30/719,111,266.45 = 282,941,289.09/x
  3. Step 3: Cross multiply
    521,086,067.30x = 719,111,266.45 × 282,941,289.09
  4. Step 4: Simplify right side
    521,086,067.30x = 203,466,268,729,050,688
  5. Step 5: Solve for x
    x = 203,466,268,729,050,688/521,086,067.30
  6. Step 6: Final answer
    x = 390,465,762.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.