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Finding the Fourth Proportional to 660,425.52, 911,387.76 and 373,946.06

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Solution

The fourth proportional to 660,425.52, 911,387.76 and 373,946.06 is: 516,045.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,425.52 : 911,387.76 = 373,946.06 : x
  2. Step 2: Convert to fraction form
    660,425.52/911,387.76 = 373,946.06/x
  3. Step 3: Cross multiply
    660,425.52x = 911,387.76 × 373,946.06
  4. Step 4: Simplify right side
    660,425.52x = 340,809,861,984.23
  5. Step 5: Solve for x
    x = 340,809,861,984.23/660,425.52
  6. Step 6: Final answer
    x = 516,045.87

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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.