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Finding the Fourth Proportional to 671,148.59, 926,184.78 and 369,342.59

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Solution

The fourth proportional to 671,148.59, 926,184.78 and 369,342.59 is: 509,692.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,148.59 : 926,184.78 = 369,342.59 : x
  2. Step 2: Convert to fraction form
    671,148.59/926,184.78 = 369,342.59/x
  3. Step 3: Cross multiply
    671,148.59x = 926,184.78 × 369,342.59
  4. Step 4: Simplify right side
    671,148.59x = 342,079,480,832.86
  5. Step 5: Solve for x
    x = 342,079,480,832.86/671,148.59
  6. Step 6: Final answer
    x = 509,692.62

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.