Home / 808,428.40-1,212,642.60-769,062.40

Finding the Fourth Proportional to 808,428.40, 1,212,642.60 and 769,062.40

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Solution

The fourth proportional to 808,428.40, 1,212,642.60 and 769,062.40 is: 1,153,593.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,428.40 : 1,212,642.60 = 769,062.40 : x
  2. Step 2: Convert to fraction form
    808,428.40/1,212,642.60 = 769,062.40/x
  3. Step 3: Cross multiply
    808,428.40x = 1,212,642.60 × 769,062.40
  4. Step 4: Simplify right side
    808,428.40x = 932,597,828,298.24
  5. Step 5: Solve for x
    x = 932,597,828,298.24/808,428.40
  6. Step 6: Final answer
    x = 1,153,593.60

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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.