Home / 780,135.30-1,170,102.51-247,662.36

Finding the Fourth Proportional to 780,135.30, 1,170,102.51 and 247,662.36

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Solution

The fourth proportional to 780,135.30, 1,170,102.51 and 247,662.36 is: 371,461.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,135.30 : 1,170,102.51 = 247,662.36 : x
  2. Step 2: Convert to fraction form
    780,135.30/1,170,102.51 = 247,662.36/x
  3. Step 3: Cross multiply
    780,135.30x = 1,170,102.51 × 247,662.36
  4. Step 4: Simplify right side
    780,135.30x = 289,790,349,068.52
  5. Step 5: Solve for x
    x = 289,790,349,068.52/780,135.30
  6. Step 6: Final answer
    x = 371,461.65

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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.