Home / 672,616,936.89-928,234,275.38-390,337,522.65

Finding the Fourth Proportional to 672,616,936.89, 928,234,275.38 and 390,337,522.65

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Solution

The fourth proportional to 672,616,936.89, 928,234,275.38 and 390,337,522.65 is: 538,679,072.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,616,936.89 : 928,234,275.38 = 390,337,522.65 : x
  2. Step 2: Convert to fraction form
    672,616,936.89/928,234,275.38 = 390,337,522.65/x
  3. Step 3: Cross multiply
    672,616,936.89x = 928,234,275.38 × 390,337,522.65
  4. Step 4: Simplify right side
    672,616,936.89x = 362,324,667,488,695,360
  5. Step 5: Solve for x
    x = 362,324,667,488,695,360/672,616,936.89
  6. Step 6: Final answer
    x = 538,679,072.17

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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.