Home / 491,216,417.65-677,938,099.25-279,574,708.64

Finding the Fourth Proportional to 491,216,417.65, 677,938,099.25 and 279,574,708.64

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Solution

The fourth proportional to 491,216,417.65, 677,938,099.25 and 279,574,708.64 is: 385,846,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,216,417.65 : 677,938,099.25 = 279,574,708.64 : x
  2. Step 2: Convert to fraction form
    491,216,417.65/677,938,099.25 = 279,574,708.64/x
  3. Step 3: Cross multiply
    491,216,417.65x = 677,938,099.25 × 279,574,708.64
  4. Step 4: Simplify right side
    491,216,417.65x = 189,534,346,573,774,144
  5. Step 5: Solve for x
    x = 189,534,346,573,774,144/491,216,417.65
  6. Step 6: Final answer
    x = 385,846,929.71

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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.