Home / 1,221,420.80-1,685,570.80-677,592.24

Finding the Fourth Proportional to 1,221,420.80, 1,685,570.80 and 677,592.24

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Solution

The fourth proportional to 1,221,420.80, 1,685,570.80 and 677,592.24 is: 935,082.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,420.80 : 1,685,570.80 = 677,592.24 : x
  2. Step 2: Convert to fraction form
    1,221,420.80/1,685,570.80 = 677,592.24/x
  3. Step 3: Cross multiply
    1,221,420.80x = 1,685,570.80 × 677,592.24
  4. Step 4: Simplify right side
    1,221,420.80x = 1,142,129,694,050.59
  5. Step 5: Solve for x
    x = 1,142,129,694,050.59/1,221,420.80
  6. Step 6: Final answer
    x = 935,082.89

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1.5x scale

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.