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Finding the Fourth Proportional to 660,940.36, 912,094.43 and 374,459.76

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Solution

The fourth proportional to 660,940.36, 912,094.43 and 374,459.76 is: 516,752.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,940.36 : 912,094.43 = 374,459.76 : x
  2. Step 2: Convert to fraction form
    660,940.36/912,094.43 = 374,459.76/x
  3. Step 3: Cross multiply
    660,940.36x = 912,094.43 × 374,459.76
  4. Step 4: Simplify right side
    660,940.36x = 341,542,659,482.84
  5. Step 5: Solve for x
    x = 341,542,659,482.84/660,940.36
  6. Step 6: Final answer
    x = 516,752.62

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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.