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Finding the Fourth Proportional to 660,880.14, 912,059.70 and 374,402.58

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Solution

The fourth proportional to 660,880.14, 912,059.70 and 374,402.58 is: 516,701.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,880.14 : 912,059.70 = 374,402.58 : x
  2. Step 2: Convert to fraction form
    660,880.14/912,059.70 = 374,402.58/x
  3. Step 3: Cross multiply
    660,880.14x = 912,059.70 × 374,402.58
  4. Step 4: Simplify right side
    660,880.14x = 341,477,504,794.03
  5. Step 5: Solve for x
    x = 341,477,504,794.03/660,880.14
  6. Step 6: Final answer
    x = 516,701.11

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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.