Home / 679,947.16-938,378.12-408,026.92

Finding the Fourth Proportional to 679,947.16, 938,378.12 and 408,026.92

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Solution

The fourth proportional to 679,947.16, 938,378.12 and 408,026.92 is: 563,107.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,947.16 : 938,378.12 = 408,026.92 : x
  2. Step 2: Convert to fraction form
    679,947.16/938,378.12 = 408,026.92/x
  3. Step 3: Cross multiply
    679,947.16x = 938,378.12 × 408,026.92
  4. Step 4: Simplify right side
    679,947.16x = 382,883,534,098.99
  5. Step 5: Solve for x
    x = 382,883,534,098.99/679,947.16
  6. Step 6: Final answer
    x = 563,107.78

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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.