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Finding the Fourth Proportional to 647,423.70, 970,905.15 and 292,607.70

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Solution

The fourth proportional to 647,423.70, 970,905.15 and 292,607.70 is: 438,807.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,423.70 : 970,905.15 = 292,607.70 : x
  2. Step 2: Convert to fraction form
    647,423.70/970,905.15 = 292,607.70/x
  3. Step 3: Cross multiply
    647,423.70x = 970,905.15 × 292,607.70
  4. Step 4: Simplify right side
    647,423.70x = 284,094,322,859.66
  5. Step 5: Solve for x
    x = 284,094,322,859.66/647,423.70
  6. Step 6: Final answer
    x = 438,807.42

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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.