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Finding the Fourth Proportional to 445,415.10, 668,122.65 and 392,927.10

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Solution

The fourth proportional to 445,415.10, 668,122.65 and 392,927.10 is: 589,390.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,415.10 : 668,122.65 = 392,927.10 : x
  2. Step 2: Convert to fraction form
    445,415.10/668,122.65 = 392,927.10/x
  3. Step 3: Cross multiply
    445,415.10x = 668,122.65 × 392,927.10
  4. Step 4: Simplify right side
    445,415.10x = 262,523,495,308.82
  5. Step 5: Solve for x
    x = 262,523,495,308.82/445,415.10
  6. Step 6: Final answer
    x = 589,390.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.