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Finding the Fourth Proportional to 668,685.58, 924,006.09 and 487,080.34

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Solution

The fourth proportional to 668,685.58, 924,006.09 and 487,080.34 is: 673,059.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,685.58 : 924,006.09 = 487,080.34 : x
  2. Step 2: Convert to fraction form
    668,685.58/924,006.09 = 487,080.34/x
  3. Step 3: Cross multiply
    668,685.58x = 924,006.09 × 487,080.34
  4. Step 4: Simplify right side
    668,685.58x = 450,065,200,479.27
  5. Step 5: Solve for x
    x = 450,065,200,479.27/668,685.58
  6. Step 6: Final answer
    x = 673,059.53

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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.