Home / 1,221,255.40-1,685,534.16-677,566.30

Finding the Fourth Proportional to 1,221,255.40, 1,685,534.16 and 677,566.30

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Solution

The fourth proportional to 1,221,255.40, 1,685,534.16 and 677,566.30 is: 935,153.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,255.40 : 1,685,534.16 = 677,566.30 : x
  2. Step 2: Convert to fraction form
    1,221,255.40/1,685,534.16 = 677,566.30/x
  3. Step 3: Cross multiply
    1,221,255.40x = 1,685,534.16 × 677,566.30
  4. Step 4: Simplify right side
    1,221,255.40x = 1,142,061,144,314.81
  5. Step 5: Solve for x
    x = 1,142,061,144,314.81/1,221,255.40
  6. Step 6: Final answer
    x = 935,153.40

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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.