Home / 1,438,574.40-1,985,236.68-785,206.32

Finding the Fourth Proportional to 1,438,574.40, 1,985,236.68 and 785,206.32

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Solution

The fourth proportional to 1,438,574.40, 1,985,236.68 and 785,206.32 is: 1,083,586.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,574.40 : 1,985,236.68 = 785,206.32 : x
  2. Step 2: Convert to fraction form
    1,438,574.40/1,985,236.68 = 785,206.32/x
  3. Step 3: Cross multiply
    1,438,574.40x = 1,985,236.68 × 785,206.32
  4. Step 4: Simplify right side
    1,438,574.40x = 1,558,820,387,831.82
  5. Step 5: Solve for x
    x = 1,558,820,387,831.82/1,438,574.40
  6. Step 6: Final answer
    x = 1,083,586.91

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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.