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Finding the Fourth Proportional to 678,369.68, 936,108.19 and 372,444.33

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Solution

The fourth proportional to 678,369.68, 936,108.19 and 372,444.33 is: 513,950.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,369.68 : 936,108.19 = 372,444.33 : x
  2. Step 2: Convert to fraction form
    678,369.68/936,108.19 = 372,444.33/x
  3. Step 3: Cross multiply
    678,369.68x = 936,108.19 × 372,444.33
  4. Step 4: Simplify right side
    678,369.68x = 348,648,190,291.62
  5. Step 5: Solve for x
    x = 348,648,190,291.62/678,369.68
  6. Step 6: Final answer
    x = 513,950.14

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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.