Home / 638,127.04-880,621.14-351,657.40

Finding the Fourth Proportional to 638,127.04, 880,621.14 and 351,657.40

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Solution

The fourth proportional to 638,127.04, 880,621.14 and 351,657.40 is: 485,290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,127.04 : 880,621.14 = 351,657.40 : x
  2. Step 2: Convert to fraction form
    638,127.04/880,621.14 = 351,657.40/x
  3. Step 3: Cross multiply
    638,127.04x = 880,621.14 × 351,657.40
  4. Step 4: Simplify right side
    638,127.04x = 309,676,940,477.44
  5. Step 5: Solve for x
    x = 309,676,940,477.44/638,127.04
  6. Step 6: Final answer
    x = 485,290.42

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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.