Home / 780,328.64-1,170,492.96-219,363.12

Finding the Fourth Proportional to 780,328.64, 1,170,492.96 and 219,363.12

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Solution

The fourth proportional to 780,328.64, 1,170,492.96 and 219,363.12 is: 329,044.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,328.64 : 1,170,492.96 = 219,363.12 : x
  2. Step 2: Convert to fraction form
    780,328.64/1,170,492.96 = 219,363.12/x
  3. Step 3: Cross multiply
    780,328.64x = 1,170,492.96 × 219,363.12
  4. Step 4: Simplify right side
    780,328.64x = 256,762,987,643.64
  5. Step 5: Solve for x
    x = 256,762,987,643.64/780,328.64
  6. Step 6: Final answer
    x = 329,044.68

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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.