Home / 638,125.04-880,618.38-351,655.40

Finding the Fourth Proportional to 638,125.04, 880,618.38 and 351,655.40

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Solution

The fourth proportional to 638,125.04, 880,618.38 and 351,655.40 is: 485,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,125.04 : 880,618.38 = 351,655.40 : x
  2. Step 2: Convert to fraction form
    638,125.04/880,618.38 = 351,655.40/x
  3. Step 3: Cross multiply
    638,125.04x = 880,618.38 × 351,655.40
  4. Step 4: Simplify right side
    638,125.04x = 309,674,209,549.09
  5. Step 5: Solve for x
    x = 309,674,209,549.09/638,125.04
  6. Step 6: Final answer
    x = 485,287.66

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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.