Home / 808,129.80-1,211,417.10-628,115.40

Finding the Fourth Proportional to 808,129.80, 1,211,417.10 and 628,115.40

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Solution

The fourth proportional to 808,129.80, 1,211,417.10 and 628,115.40 is: 941,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,129.80 : 1,211,417.10 = 628,115.40 : x
  2. Step 2: Convert to fraction form
    808,129.80/1,211,417.10 = 628,115.40/x
  3. Step 3: Cross multiply
    808,129.80x = 1,211,417.10 × 628,115.40
  4. Step 4: Simplify right side
    808,129.80x = 760,909,736,333.34
  5. Step 5: Solve for x
    x = 760,909,736,333.34/808,129.80
  6. Step 6: Final answer
    x = 941,568.71

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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.