Home / 638,353.65-880,927.81-351,878.52

Finding the Fourth Proportional to 638,353.65, 880,927.81 and 351,878.52

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Solution

The fourth proportional to 638,353.65, 880,927.81 and 351,878.52 is: 485,592.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,353.65 : 880,927.81 = 351,878.52 : x
  2. Step 2: Convert to fraction form
    638,353.65/880,927.81 = 351,878.52/x
  3. Step 3: Cross multiply
    638,353.65x = 880,927.81 × 351,878.52
  4. Step 4: Simplify right side
    638,353.65x = 309,979,574,009.64
  5. Step 5: Solve for x
    x = 309,979,574,009.64/638,353.65
  6. Step 6: Final answer
    x = 485,592.23

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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.