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Finding the Fourth Proportional to 545,645.80, 817,086.30 and 435,053.80

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Solution

The fourth proportional to 545,645.80, 817,086.30 and 435,053.80 is: 651,478.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,645.80 : 817,086.30 = 435,053.80 : x
  2. Step 2: Convert to fraction form
    545,645.80/817,086.30 = 435,053.80/x
  3. Step 3: Cross multiply
    545,645.80x = 817,086.30 × 435,053.80
  4. Step 4: Simplify right side
    545,645.80x = 355,476,499,742.94
  5. Step 5: Solve for x
    x = 355,476,499,742.94/545,645.80
  6. Step 6: Final answer
    x = 651,478.49

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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.