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Finding the Fourth Proportional to 660,817.74, 911,984.20 and 370,424.64

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Solution

The fourth proportional to 660,817.74, 911,984.20 and 370,424.64 is: 511,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,817.74 : 911,984.20 = 370,424.64 : x
  2. Step 2: Convert to fraction form
    660,817.74/911,984.20 = 370,424.64/x
  3. Step 3: Cross multiply
    660,817.74x = 911,984.20 × 370,424.64
  4. Step 4: Simplify right side
    660,817.74x = 337,821,418,970.69
  5. Step 5: Solve for x
    x = 337,821,418,970.69/660,817.74
  6. Step 6: Final answer
    x = 511,217.24

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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.