Home / 1,605,931.41-2,215,981.05-917,647.78

Finding the Fourth Proportional to 1,605,931.41, 2,215,981.05 and 917,647.78

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Solution

The fourth proportional to 1,605,931.41, 2,215,981.05 and 917,647.78 is: 1,266,237.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605,931.41 : 2,215,981.05 = 917,647.78 : x
  2. Step 2: Convert to fraction form
    1,605,931.41/2,215,981.05 = 917,647.78/x
  3. Step 3: Cross multiply
    1,605,931.41x = 2,215,981.05 × 917,647.78
  4. Step 4: Simplify right side
    1,605,931.41x = 2,033,490,086,448.12
  5. Step 5: Solve for x
    x = 2,033,490,086,448.12/1,605,931.41
  6. Step 6: Final answer
    x = 1,266,237.20

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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.