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Finding the Fourth Proportional to 800,710.54, 1,104,980.55 and 438,134.40

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Solution

The fourth proportional to 800,710.54, 1,104,980.55 and 438,134.40 is: 604,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,710.54 : 1,104,980.55 = 438,134.40 : x
  2. Step 2: Convert to fraction form
    800,710.54/1,104,980.55 = 438,134.40/x
  3. Step 3: Cross multiply
    800,710.54x = 1,104,980.55 × 438,134.40
  4. Step 4: Simplify right side
    800,710.54x = 484,129,990,285.92
  5. Step 5: Solve for x
    x = 484,129,990,285.92/800,710.54
  6. Step 6: Final answer
    x = 604,625.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.