Home / 605,616.80-907,441.05-520,979.90

Finding the Fourth Proportional to 605,616.80, 907,441.05 and 520,979.90

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Solution

The fourth proportional to 605,616.80, 907,441.05 and 520,979.90 is: 780,623.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,616.80 : 907,441.05 = 520,979.90 : x
  2. Step 2: Convert to fraction form
    605,616.80/907,441.05 = 520,979.90/x
  3. Step 3: Cross multiply
    605,616.80x = 907,441.05 × 520,979.90
  4. Step 4: Simplify right side
    605,616.80x = 472,758,547,484.90
  5. Step 5: Solve for x
    x = 472,758,547,484.90/605,616.80
  6. Step 6: Final answer
    x = 780,623.24

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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.