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Finding the Fourth Proportional to 403,087.16, 604,734.62 and 289,366.80

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Solution

The fourth proportional to 403,087.16, 604,734.62 and 289,366.80 is: 434,124.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,087.16 : 604,734.62 = 289,366.80 : x
  2. Step 2: Convert to fraction form
    403,087.16/604,734.62 = 289,366.80/x
  3. Step 3: Cross multiply
    403,087.16x = 604,734.62 × 289,366.80
  4. Step 4: Simplify right side
    403,087.16x = 174,990,120,391.78
  5. Step 5: Solve for x
    x = 174,990,120,391.78/403,087.16
  6. Step 6: Final answer
    x = 434,124.77

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1.5x scale

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.