Home / 485,536,071.91-670,101,146.74-318,412,934.90

Finding the Fourth Proportional to 485,536,071.91, 670,101,146.74 and 318,412,934.90

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Solution

The fourth proportional to 485,536,071.91, 670,101,146.74 and 318,412,934.90 is: 439,450,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,536,071.91 : 670,101,146.74 = 318,412,934.90 : x
  2. Step 2: Convert to fraction form
    485,536,071.91/670,101,146.74 = 318,412,934.90/x
  3. Step 3: Cross multiply
    485,536,071.91x = 670,101,146.74 × 318,412,934.90
  4. Step 4: Simplify right side
    485,536,071.91x = 213,368,872,813,338,944
  5. Step 5: Solve for x
    x = 213,368,872,813,338,944/485,536,071.91
  6. Step 6: Final answer
    x = 439,450,094.77

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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.