Home / 638,126.04-880,619.76-351,656.40

Finding the Fourth Proportional to 638,126.04, 880,619.76 and 351,656.40

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Solution

The fourth proportional to 638,126.04, 880,619.76 and 351,656.40 is: 485,289.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,126.04 : 880,619.76 = 351,656.40 : x
  2. Step 2: Convert to fraction form
    638,126.04/880,619.76 = 351,656.40/x
  3. Step 3: Cross multiply
    638,126.04x = 880,619.76 × 351,656.40
  4. Step 4: Simplify right side
    638,126.04x = 309,675,574,570.46
  5. Step 5: Solve for x
    x = 309,675,574,570.46/638,126.04
  6. Step 6: Final answer
    x = 485,289.04

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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.