Home / 1,991,567.40-2,986,962.30-661,871.40

Finding the Fourth Proportional to 1,991,567.40, 2,986,962.30 and 661,871.40

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Solution

The fourth proportional to 1,991,567.40, 2,986,962.30 and 661,871.40 is: 992,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,567.40 : 2,986,962.30 = 661,871.40 : x
  2. Step 2: Convert to fraction form
    1,991,567.40/2,986,962.30 = 661,871.40/x
  3. Step 3: Cross multiply
    1,991,567.40x = 2,986,962.30 × 661,871.40
  4. Step 4: Simplify right side
    1,991,567.40x = 1,976,984,919,248.22
  5. Step 5: Solve for x
    x = 1,976,984,919,248.22/1,991,567.40
  6. Step 6: Final answer
    x = 992,677.89

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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.