Home / 1,266,918.30-1,748,338.56-686,128.05

Finding the Fourth Proportional to 1,266,918.30, 1,748,338.56 and 686,128.05

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Solution

The fourth proportional to 1,266,918.30, 1,748,338.56 and 686,128.05 is: 946,852.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,918.30 : 1,748,338.56 = 686,128.05 : x
  2. Step 2: Convert to fraction form
    1,266,918.30/1,748,338.56 = 686,128.05/x
  3. Step 3: Cross multiply
    1,266,918.30x = 1,748,338.56 × 686,128.05
  4. Step 4: Simplify right side
    1,266,918.30x = 1,199,584,126,912.61
  5. Step 5: Solve for x
    x = 1,199,584,126,912.61/1,266,918.30
  6. Step 6: Final answer
    x = 946,852.00

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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.