Home / 1,398,075.71-1,929,326.14-786,228.28

Finding the Fourth Proportional to 1,398,075.71, 1,929,326.14 and 786,228.28

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Solution

The fourth proportional to 1,398,075.71, 1,929,326.14 and 786,228.28 is: 1,084,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,075.71 : 1,929,326.14 = 786,228.28 : x
  2. Step 2: Convert to fraction form
    1,398,075.71/1,929,326.14 = 786,228.28/x
  3. Step 3: Cross multiply
    1,398,075.71x = 1,929,326.14 × 786,228.28
  4. Step 4: Simplify right side
    1,398,075.71x = 1,516,890,776,005.68
  5. Step 5: Solve for x
    x = 1,516,890,776,005.68/1,398,075.71
  6. Step 6: Final answer
    x = 1,084,984.72

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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.