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Finding the Fourth Proportional to 525,266.40, 788,774.40 and 288,778.80

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Solution

The fourth proportional to 525,266.40, 788,774.40 and 288,778.80 is: 433,649.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,266.40 : 788,774.40 = 288,778.80 : x
  2. Step 2: Convert to fraction form
    525,266.40/788,774.40 = 288,778.80/x
  3. Step 3: Cross multiply
    525,266.40x = 788,774.40 × 288,778.80
  4. Step 4: Simplify right side
    525,266.40x = 227,781,324,702.72
  5. Step 5: Solve for x
    x = 227,781,324,702.72/525,266.40
  6. Step 6: Final answer
    x = 433,649.14

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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.