Home / 688,098.78-949,569.75-386,290.62

Finding the Fourth Proportional to 688,098.78, 949,569.75 and 386,290.62

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Solution

The fourth proportional to 688,098.78, 949,569.75 and 386,290.62 is: 533,077.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,098.78 : 949,569.75 = 386,290.62 : x
  2. Step 2: Convert to fraction form
    688,098.78/949,569.75 = 386,290.62/x
  3. Step 3: Cross multiply
    688,098.78x = 949,569.75 × 386,290.62
  4. Step 4: Simplify right side
    688,098.78x = 366,809,887,460.75
  5. Step 5: Solve for x
    x = 366,809,887,460.75/688,098.78
  6. Step 6: Final answer
    x = 533,077.37

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1.5x scale

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.