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Finding the Fourth Proportional to 660,015.60, 910,836 and 373,535.88

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Solution

The fourth proportional to 660,015.60, 910,836 and 373,535.88 is: 515,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,015.60 : 910,836 = 373,535.88 : x
  2. Step 2: Convert to fraction form
    660,015.60/910,836 = 373,535.88/x
  3. Step 3: Cross multiply
    660,015.60x = 910,836 × 373,535.88
  4. Step 4: Simplify right side
    660,015.60x = 340,229,926,795.68
  5. Step 5: Solve for x
    x = 340,229,926,795.68/660,015.60
  6. Step 6: Final answer
    x = 515,487.70

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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.