Home / 491,216,421.68-677,938,104.80-279,574,712.64

Finding the Fourth Proportional to 491,216,421.68, 677,938,104.80 and 279,574,712.64

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Solution

The fourth proportional to 491,216,421.68, 677,938,104.80 and 279,574,712.64 is: 385,846,935.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,216,421.68 : 677,938,104.80 = 279,574,712.64 : x
  2. Step 2: Convert to fraction form
    491,216,421.68/677,938,104.80 = 279,574,712.64/x
  3. Step 3: Cross multiply
    491,216,421.68x = 677,938,104.80 × 279,574,712.64
  4. Step 4: Simplify right side
    491,216,421.68x = 189,534,350,837,166,176
  5. Step 5: Solve for x
    x = 189,534,350,837,166,176/491,216,421.68
  6. Step 6: Final answer
    x = 385,846,935.22

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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.