Home / 780,143.10-1,170,603.45-443,442.30

Finding the Fourth Proportional to 780,143.10, 1,170,603.45 and 443,442.30

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Solution

The fourth proportional to 780,143.10, 1,170,603.45 and 443,442.30 is: 665,384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,143.10 : 1,170,603.45 = 443,442.30 : x
  2. Step 2: Convert to fraction form
    780,143.10/1,170,603.45 = 443,442.30/x
  3. Step 3: Cross multiply
    780,143.10x = 1,170,603.45 × 443,442.30
  4. Step 4: Simplify right side
    780,143.10x = 519,095,086,255.94
  5. Step 5: Solve for x
    x = 519,095,086,255.94/780,143.10
  6. Step 6: Final answer
    x = 665,384.45

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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.