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Finding the Fourth Proportional to 660,602.80, 990,709.80 and 187,329.52

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Solution

The fourth proportional to 660,602.80, 990,709.80 and 187,329.52 is: 280,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,602.80 : 990,709.80 = 187,329.52 : x
  2. Step 2: Convert to fraction form
    660,602.80/990,709.80 = 187,329.52/x
  3. Step 3: Cross multiply
    660,602.80x = 990,709.80 × 187,329.52
  4. Step 4: Simplify right side
    660,602.80x = 185,589,191,293.30
  5. Step 5: Solve for x
    x = 185,589,191,293.30/660,602.80
  6. Step 6: Final answer
    x = 280,939.15

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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.