Home / 810,040.80-1,213,603.20-642,662.40

Finding the Fourth Proportional to 810,040.80, 1,213,603.20 and 642,662.40

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Solution

The fourth proportional to 810,040.80, 1,213,603.20 and 642,662.40 is: 962,836.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,040.80 : 1,213,603.20 = 642,662.40 : x
  2. Step 2: Convert to fraction form
    810,040.80/1,213,603.20 = 642,662.40/x
  3. Step 3: Cross multiply
    810,040.80x = 1,213,603.20 × 642,662.40
  4. Step 4: Simplify right side
    810,040.80x = 779,937,145,159.68
  5. Step 5: Solve for x
    x = 779,937,145,159.68/810,040.80
  6. Step 6: Final answer
    x = 962,836.87

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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.