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Finding the Fourth Proportional to 525,076.80, 787,615.20 and 502,040.40

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Solution

The fourth proportional to 525,076.80, 787,615.20 and 502,040.40 is: 753,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,076.80 : 787,615.20 = 502,040.40 : x
  2. Step 2: Convert to fraction form
    525,076.80/787,615.20 = 502,040.40/x
  3. Step 3: Cross multiply
    525,076.80x = 787,615.20 × 502,040.40
  4. Step 4: Simplify right side
    525,076.80x = 395,414,650,054.08
  5. Step 5: Solve for x
    x = 395,414,650,054.08/525,076.80
  6. Step 6: Final answer
    x = 753,060.60

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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.