Home / 638,345.71-880,916.87-351,870.58

Finding the Fourth Proportional to 638,345.71, 880,916.87 and 351,870.58

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Solution

The fourth proportional to 638,345.71, 880,916.87 and 351,870.58 is: 485,581.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,345.71 : 880,916.87 = 351,870.58 : x
  2. Step 2: Convert to fraction form
    638,345.71/880,916.87 = 351,870.58/x
  3. Step 3: Cross multiply
    638,345.71x = 880,916.87 × 351,870.58
  4. Step 4: Simplify right side
    638,345.71x = 309,968,729,980.24
  5. Step 5: Solve for x
    x = 309,968,729,980.24/638,345.71
  6. Step 6: Final answer
    x = 485,581.28

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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.