Home / 420,769,579.80-631,154,369.70-404,645,266.20

Finding the Fourth Proportional to 420,769,579.80, 631,154,369.70 and 404,645,266.20

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Solution

The fourth proportional to 420,769,579.80, 631,154,369.70 and 404,645,266.20 is: 606,967,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,769,579.80 : 631,154,369.70 = 404,645,266.20 : x
  2. Step 2: Convert to fraction form
    420,769,579.80/631,154,369.70 = 404,645,266.20/x
  3. Step 3: Cross multiply
    420,769,579.80x = 631,154,369.70 × 404,645,266.20
  4. Step 4: Simplify right side
    420,769,579.80x = 255,393,627,940,549,728
  5. Step 5: Solve for x
    x = 255,393,627,940,549,728/420,769,579.80
  6. Step 6: Final answer
    x = 606,967,899.30

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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.