Home / 1,398,979.40-2,093,630.70-838,416.20

Finding the Fourth Proportional to 1,398,979.40, 2,093,630.70 and 838,416.20

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Solution

The fourth proportional to 1,398,979.40, 2,093,630.70 and 838,416.20 is: 1,254,724.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,979.40 : 2,093,630.70 = 838,416.20 : x
  2. Step 2: Convert to fraction form
    1,398,979.40/2,093,630.70 = 838,416.20/x
  3. Step 3: Cross multiply
    1,398,979.40x = 2,093,630.70 × 838,416.20
  4. Step 4: Simplify right side
    1,398,979.40x = 1,755,333,895,697.34
  5. Step 5: Solve for x
    x = 1,755,333,895,697.34/1,398,979.40
  6. Step 6: Final answer
    x = 1,254,724.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.