Home / 718,364,104.16-991,154,856.51-420,846,409.35

Finding the Fourth Proportional to 718,364,104.16, 991,154,856.51 and 420,846,409.35

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Solution

The fourth proportional to 718,364,104.16, 991,154,856.51 and 420,846,409.35 is: 580,658,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,364,104.16 : 991,154,856.51 = 420,846,409.35 : x
  2. Step 2: Convert to fraction form
    718,364,104.16/991,154,856.51 = 420,846,409.35/x
  3. Step 3: Cross multiply
    718,364,104.16x = 991,154,856.51 × 420,846,409.35
  4. Step 4: Simplify right side
    718,364,104.16x = 417,123,962,472,048,000
  5. Step 5: Solve for x
    x = 417,123,962,472,048,000/718,364,104.16
  6. Step 6: Final answer
    x = 580,658,137.09

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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.