Home / 1,011,864.80-1,515,077.24-770,830.40

Finding the Fourth Proportional to 1,011,864.80, 1,515,077.24 and 770,830.40

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Solution

The fourth proportional to 1,011,864.80, 1,515,077.24 and 770,830.40 is: 1,154,173.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,011,864.80 : 1,515,077.24 = 770,830.40 : x
  2. Step 2: Convert to fraction form
    1,011,864.80/1,515,077.24 = 770,830.40/x
  3. Step 3: Cross multiply
    1,011,864.80x = 1,515,077.24 × 770,830.40
  4. Step 4: Simplify right side
    1,011,864.80x = 1,167,867,594,940.10
  5. Step 5: Solve for x
    x = 1,167,867,594,940.10/1,011,864.80
  6. Step 6: Final answer
    x = 1,154,173.56

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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.