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Finding the Fourth Proportional to 525,269.40, 788,778.90 and 288,781.80

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Solution

The fourth proportional to 525,269.40, 788,778.90 and 288,781.80 is: 433,653.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,269.40 : 788,778.90 = 288,781.80 : x
  2. Step 2: Convert to fraction form
    525,269.40/788,778.90 = 288,781.80/x
  3. Step 3: Cross multiply
    525,269.40x = 788,778.90 × 288,781.80
  4. Step 4: Simplify right side
    525,269.40x = 227,784,990,544.02
  5. Step 5: Solve for x
    x = 227,784,990,544.02/525,269.40
  6. Step 6: Final answer
    x = 433,653.65

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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.