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Finding the Fourth Proportional to 669,356.58, 923,369.82 and 427,384.74

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Solution

The fourth proportional to 669,356.58, 923,369.82 and 427,384.74 is: 589,572.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,356.58 : 923,369.82 = 427,384.74 : x
  2. Step 2: Convert to fraction form
    669,356.58/923,369.82 = 427,384.74/x
  3. Step 3: Cross multiply
    669,356.58x = 923,369.82 × 427,384.74
  4. Step 4: Simplify right side
    669,356.58x = 394,634,170,444.55
  5. Step 5: Solve for x
    x = 394,634,170,444.55/669,356.58
  6. Step 6: Final answer
    x = 589,572.41

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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.