Home / 638,315.61-880,865.04-351,862.35

Finding the Fourth Proportional to 638,315.61, 880,865.04 and 351,862.35

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Solution

The fourth proportional to 638,315.61, 880,865.04 and 351,862.35 is: 485,564.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,315.61 : 880,865.04 = 351,862.35 : x
  2. Step 2: Convert to fraction form
    638,315.61/880,865.04 = 351,862.35/x
  3. Step 3: Cross multiply
    638,315.61x = 880,865.04 × 351,862.35
  4. Step 4: Simplify right side
    638,315.61x = 309,943,243,007.24
  5. Step 5: Solve for x
    x = 309,943,243,007.24/638,315.61
  6. Step 6: Final answer
    x = 485,564.25

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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.