Home / 638,483,935.68-957,266,260.20-392,331,999.40

Finding the Fourth Proportional to 638,483,935.68, 957,266,260.20 and 392,331,999.40

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Solution

The fourth proportional to 638,483,935.68, 957,266,260.20 and 392,331,999.40 is: 588,215,560.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,483,935.68 : 957,266,260.20 = 392,331,999.40 : x
  2. Step 2: Convert to fraction form
    638,483,935.68/957,266,260.20 = 392,331,999.40/x
  3. Step 3: Cross multiply
    638,483,935.68x = 957,266,260.20 × 392,331,999.40
  4. Step 4: Simplify right side
    638,483,935.68x = 375,566,185,820,033,472
  5. Step 5: Solve for x
    x = 375,566,185,820,033,472/638,483,935.68
  6. Step 6: Final answer
    x = 588,215,560.07

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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.