Home / 1,243,726.70-1,866,574.20-485,931.20

Finding the Fourth Proportional to 1,243,726.70, 1,866,574.20 and 485,931.20

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Solution

The fourth proportional to 1,243,726.70, 1,866,574.20 and 485,931.20 is: 729,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,726.70 : 1,866,574.20 = 485,931.20 : x
  2. Step 2: Convert to fraction form
    1,243,726.70/1,866,574.20 = 485,931.20/x
  3. Step 3: Cross multiply
    1,243,726.70x = 1,866,574.20 × 485,931.20
  4. Step 4: Simplify right side
    1,243,726.70x = 907,026,640,895.04
  5. Step 5: Solve for x
    x = 907,026,640,895.04/1,243,726.70
  6. Step 6: Final answer
    x = 729,281.31

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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.