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Finding the Fourth Proportional to 619,336.90, 929,005.35 and 494,920.90

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Solution

The fourth proportional to 619,336.90, 929,005.35 and 494,920.90 is: 742,381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,336.90 : 929,005.35 = 494,920.90 : x
  2. Step 2: Convert to fraction form
    619,336.90/929,005.35 = 494,920.90/x
  3. Step 3: Cross multiply
    619,336.90x = 929,005.35 × 494,920.90
  4. Step 4: Simplify right side
    619,336.90x = 459,784,163,926.82
  5. Step 5: Solve for x
    x = 459,784,163,926.82/619,336.90
  6. Step 6: Final answer
    x = 742,381.35

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Double scale
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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.