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Finding the Fourth Proportional to 671,137.86, 926,170.40 and 369,331.86

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Solution

The fourth proportional to 671,137.86, 926,170.40 and 369,331.86 is: 509,678.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,137.86 : 926,170.40 = 369,331.86 : x
  2. Step 2: Convert to fraction form
    671,137.86/926,170.40 = 369,331.86/x
  3. Step 3: Cross multiply
    671,137.86x = 926,170.40 × 369,331.86
  4. Step 4: Simplify right side
    671,137.86x = 342,064,236,047.28
  5. Step 5: Solve for x
    x = 342,064,236,047.28/671,137.86
  6. Step 6: Final answer
    x = 509,678.05

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Double scale
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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.