Home / 491,216,562.92-677,938,299.10-279,574,851.26

Finding the Fourth Proportional to 491,216,562.92, 677,938,299.10 and 279,574,851.26

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Solution

The fourth proportional to 491,216,562.92, 677,938,299.10 and 279,574,851.26 is: 385,847,126.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,216,562.92 : 677,938,299.10 = 279,574,851.26 : x
  2. Step 2: Convert to fraction form
    491,216,562.92/677,938,299.10 = 279,574,851.26/x
  3. Step 3: Cross multiply
    491,216,562.92x = 677,938,299.10 × 279,574,851.26
  4. Step 4: Simplify right side
    491,216,562.92x = 189,534,499,134,339,904
  5. Step 5: Solve for x
    x = 189,534,499,134,339,904/491,216,562.92
  6. Step 6: Final answer
    x = 385,847,126.18

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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.