Home / 420,770,424.80-631,155,637.20-404,646,111.20

Finding the Fourth Proportional to 420,770,424.80, 631,155,637.20 and 404,646,111.20

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Solution

The fourth proportional to 420,770,424.80, 631,155,637.20 and 404,646,111.20 is: 606,969,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,770,424.80 : 631,155,637.20 = 404,646,111.20 : x
  2. Step 2: Convert to fraction form
    420,770,424.80/631,155,637.20 = 404,646,111.20/x
  3. Step 3: Cross multiply
    420,770,424.80x = 631,155,637.20 × 404,646,111.20
  4. Step 4: Simplify right side
    420,770,424.80x = 255,394,674,154,938,080
  5. Step 5: Solve for x
    x = 255,394,674,154,938,080/420,770,424.80
  6. Step 6: Final answer
    x = 606,969,166.80

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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.