Home / 402,409,869.60-603,614,804.40-279,965,863.20

Finding the Fourth Proportional to 402,409,869.60, 603,614,804.40 and 279,965,863.20

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Solution

The fourth proportional to 402,409,869.60, 603,614,804.40 and 279,965,863.20 is: 419,948,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,409,869.60 : 603,614,804.40 = 279,965,863.20 : x
  2. Step 2: Convert to fraction form
    402,409,869.60/603,614,804.40 = 279,965,863.20/x
  3. Step 3: Cross multiply
    402,409,869.60x = 603,614,804.40 × 279,965,863.20
  4. Step 4: Simplify right side
    402,409,869.60x = 168,991,539,754,145,152
  5. Step 5: Solve for x
    x = 168,991,539,754,145,152/402,409,869.60
  6. Step 6: Final answer
    x = 419,948,794.80

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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.