Home / 810,005.40-1,215,008.10-792,509.40

Finding the Fourth Proportional to 810,005.40, 1,215,008.10 and 792,509.40

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Solution

The fourth proportional to 810,005.40, 1,215,008.10 and 792,509.40 is: 1,188,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,005.40 : 1,215,008.10 = 792,509.40 : x
  2. Step 2: Convert to fraction form
    810,005.40/1,215,008.10 = 792,509.40/x
  3. Step 3: Cross multiply
    810,005.40x = 1,215,008.10 × 792,509.40
  4. Step 4: Simplify right side
    810,005.40x = 962,905,340,326.14
  5. Step 5: Solve for x
    x = 962,905,340,326.14/810,005.40
  6. Step 6: Final answer
    x = 1,188,764.10

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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.