Home / 830,134.61-1,245,202.25-640,871.30

Finding the Fourth Proportional to 830,134.61, 1,245,202.25 and 640,871.30

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Solution

The fourth proportional to 830,134.61, 1,245,202.25 and 640,871.30 is: 961,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,134.61 : 1,245,202.25 = 640,871.30 : x
  2. Step 2: Convert to fraction form
    830,134.61/1,245,202.25 = 640,871.30/x
  3. Step 3: Cross multiply
    830,134.61x = 1,245,202.25 × 640,871.30
  4. Step 4: Simplify right side
    830,134.61x = 798,014,375,290.06
  5. Step 5: Solve for x
    x = 798,014,375,290.06/830,134.61
  6. Step 6: Final answer
    x = 961,307.20

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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.