Home / 688,100.78-949,572.51-386,292.62

Finding the Fourth Proportional to 688,100.78, 949,572.51 and 386,292.62

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Solution

The fourth proportional to 688,100.78, 949,572.51 and 386,292.62 is: 533,080.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,100.78 : 949,572.51 = 386,292.62 : x
  2. Step 2: Convert to fraction form
    688,100.78/949,572.51 = 386,292.62/x
  3. Step 3: Cross multiply
    688,100.78x = 949,572.51 × 386,292.62
  4. Step 4: Simplify right side
    688,100.78x = 366,812,852,767.88
  5. Step 5: Solve for x
    x = 366,812,852,767.88/688,100.78
  6. Step 6: Final answer
    x = 533,080.13

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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.