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Finding the Fourth Proportional to 525,079.80, 786,453.30 and 455,095.80

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Solution

The fourth proportional to 525,079.80, 786,453.30 and 455,095.80 is: 681,632.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,079.80 : 786,453.30 = 455,095.80 : x
  2. Step 2: Convert to fraction form
    525,079.80/786,453.30 = 455,095.80/x
  3. Step 3: Cross multiply
    525,079.80x = 786,453.30 × 455,095.80
  4. Step 4: Simplify right side
    525,079.80x = 357,911,593,726.14
  5. Step 5: Solve for x
    x = 357,911,593,726.14/525,079.80
  6. Step 6: Final answer
    x = 681,632.76

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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.