Home / 1,291,345.10-1,781,574.90-807,726.50

Finding the Fourth Proportional to 1,291,345.10, 1,781,574.90 and 807,726.50

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Solution

The fourth proportional to 1,291,345.10, 1,781,574.90 and 807,726.50 is: 1,114,361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,345.10 : 1,781,574.90 = 807,726.50 : x
  2. Step 2: Convert to fraction form
    1,291,345.10/1,781,574.90 = 807,726.50/x
  3. Step 3: Cross multiply
    1,291,345.10x = 1,781,574.90 × 807,726.50
  4. Step 4: Simplify right side
    1,291,345.10x = 1,439,025,257,752.37
  5. Step 5: Solve for x
    x = 1,439,025,257,752.37/1,291,345.10
  6. Step 6: Final answer
    x = 1,114,361.50

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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.