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Finding the Fourth Proportional to 525,726.80, 788,590.20 and 359,838.80

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Solution

The fourth proportional to 525,726.80, 788,590.20 and 359,838.80 is: 539,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,726.80 : 788,590.20 = 359,838.80 : x
  2. Step 2: Convert to fraction form
    525,726.80/788,590.20 = 359,838.80/x
  3. Step 3: Cross multiply
    525,726.80x = 788,590.20 × 359,838.80
  4. Step 4: Simplify right side
    525,726.80x = 283,765,351,259.76
  5. Step 5: Solve for x
    x = 283,765,351,259.76/525,726.80
  6. Step 6: Final answer
    x = 539,758.20

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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.