Home / 1,221,440.80-1,685,598.42-677,612.20

Finding the Fourth Proportional to 1,221,440.80, 1,685,598.42 and 677,612.20

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Solution

The fourth proportional to 1,221,440.80, 1,685,598.42 and 677,612.20 is: 935,110.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,440.80 : 1,685,598.42 = 677,612.20 : x
  2. Step 2: Convert to fraction form
    1,221,440.80/1,685,598.42 = 677,612.20/x
  3. Step 3: Cross multiply
    1,221,440.80x = 1,685,598.42 × 677,612.20
  4. Step 4: Simplify right side
    1,221,440.80x = 1,142,182,053,692.72
  5. Step 5: Solve for x
    x = 1,142,182,053,692.72/1,221,440.80
  6. Step 6: Final answer
    x = 935,110.45

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Double scale
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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.