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Finding the Fourth Proportional to 660,118.74, 990,019.32 and 304,791.18

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Solution

The fourth proportional to 660,118.74, 990,019.32 and 304,791.18 is: 457,113.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,118.74 : 990,019.32 = 304,791.18 : x
  2. Step 2: Convert to fraction form
    660,118.74/990,019.32 = 304,791.18/x
  3. Step 3: Cross multiply
    660,118.74x = 990,019.32 × 304,791.18
  4. Step 4: Simplify right side
    660,118.74x = 301,749,156,765.60
  5. Step 5: Solve for x
    x = 301,749,156,765.60/660,118.74
  6. Step 6: Final answer
    x = 457,113.45

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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.