Home / 692,108.20-954,945.78-390,243.88

Finding the Fourth Proportional to 692,108.20, 954,945.78 and 390,243.88

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Solution

The fourth proportional to 692,108.20, 954,945.78 and 390,243.88 is: 538,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,108.20 : 954,945.78 = 390,243.88 : x
  2. Step 2: Convert to fraction form
    692,108.20/954,945.78 = 390,243.88/x
  3. Step 3: Cross multiply
    692,108.20x = 954,945.78 × 390,243.88
  4. Step 4: Simplify right side
    692,108.20x = 372,661,746,376.83
  5. Step 5: Solve for x
    x = 372,661,746,376.83/692,108.20
  6. Step 6: Final answer
    x = 538,444.34

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Double scale
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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.