Home / 720,478.08-1,079,550.72-439,142.40

Finding the Fourth Proportional to 720,478.08, 1,079,550.72 and 439,142.40

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Solution

The fourth proportional to 720,478.08, 1,079,550.72 and 439,142.40 is: 658,002.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,478.08 : 1,079,550.72 = 439,142.40 : x
  2. Step 2: Convert to fraction form
    720,478.08/1,079,550.72 = 439,142.40/x
  3. Step 3: Cross multiply
    720,478.08x = 1,079,550.72 × 439,142.40
  4. Step 4: Simplify right side
    720,478.08x = 474,076,494,102.53
  5. Step 5: Solve for x
    x = 474,076,494,102.53/720,478.08
  6. Step 6: Final answer
    x = 658,002.66

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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.