Home / 709,618,548.30-979,263,174.87-396,357,333.90

Finding the Fourth Proportional to 709,618,548.30, 979,263,174.87 and 396,357,333.90

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Solution

The fourth proportional to 709,618,548.30, 979,263,174.87 and 396,357,333.90 is: 546,967,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,618,548.30 : 979,263,174.87 = 396,357,333.90 : x
  2. Step 2: Convert to fraction form
    709,618,548.30/979,263,174.87 = 396,357,333.90/x
  3. Step 3: Cross multiply
    709,618,548.30x = 979,263,174.87 × 396,357,333.90
  4. Step 4: Simplify right side
    709,618,548.30x = 388,138,141,177,922,688
  5. Step 5: Solve for x
    x = 388,138,141,177,922,688/709,618,548.30
  6. Step 6: Final answer
    x = 546,967,299.70

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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.