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Finding the Fourth Proportional to 620,010.80, 930,016.20 and 557,025.20

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Solution

The fourth proportional to 620,010.80, 930,016.20 and 557,025.20 is: 835,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,010.80 : 930,016.20 = 557,025.20 : x
  2. Step 2: Convert to fraction form
    620,010.80/930,016.20 = 557,025.20/x
  3. Step 3: Cross multiply
    620,010.80x = 930,016.20 × 557,025.20
  4. Step 4: Simplify right side
    620,010.80x = 518,042,459,808.24
  5. Step 5: Solve for x
    x = 518,042,459,808.24/620,010.80
  6. Step 6: Final answer
    x = 835,537.80

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Similar ratio
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1.5x scale

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.