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Finding the Fourth Proportional to 660,282.51, 990,292.53 and 323,178.33

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Solution

The fourth proportional to 660,282.51, 990,292.53 and 323,178.33 is: 484,703.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,282.51 : 990,292.53 = 323,178.33 : x
  2. Step 2: Convert to fraction form
    660,282.51/990,292.53 = 323,178.33/x
  3. Step 3: Cross multiply
    660,282.51x = 990,292.53 × 323,178.33
  4. Step 4: Simplify right side
    660,282.51x = 320,041,086,056.88
  5. Step 5: Solve for x
    x = 320,041,086,056.88/660,282.51
  6. Step 6: Final answer
    x = 484,703.26

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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.