Home / 850,577.40-1,275,866.10-640,625.40

Finding the Fourth Proportional to 850,577.40, 1,275,866.10 and 640,625.40

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Solution

The fourth proportional to 850,577.40, 1,275,866.10 and 640,625.40 is: 960,938.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,577.40 : 1,275,866.10 = 640,625.40 : x
  2. Step 2: Convert to fraction form
    850,577.40/1,275,866.10 = 640,625.40/x
  3. Step 3: Cross multiply
    850,577.40x = 1,275,866.10 × 640,625.40
  4. Step 4: Simplify right side
    850,577.40x = 817,352,230,658.94
  5. Step 5: Solve for x
    x = 817,352,230,658.94/850,577.40
  6. Step 6: Final answer
    x = 960,938.10

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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.