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Finding the Fourth Proportional to 666,683.28, 920,025.36 and 360,759.66

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Solution

The fourth proportional to 666,683.28, 920,025.36 and 360,759.66 is: 497,849.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,683.28 : 920,025.36 = 360,759.66 : x
  2. Step 2: Convert to fraction form
    666,683.28/920,025.36 = 360,759.66/x
  3. Step 3: Cross multiply
    666,683.28x = 920,025.36 × 360,759.66
  4. Step 4: Simplify right side
    666,683.28x = 331,908,036,064.98
  5. Step 5: Solve for x
    x = 331,908,036,064.98/666,683.28
  6. Step 6: Final answer
    x = 497,849.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.