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Finding the Fourth Proportional to 661,181.36, 912,411.12 and 374,727.92

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Solution

The fourth proportional to 661,181.36, 912,411.12 and 374,727.92 is: 517,113.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,181.36 : 912,411.12 = 374,727.92 : x
  2. Step 2: Convert to fraction form
    661,181.36/912,411.12 = 374,727.92/x
  3. Step 3: Cross multiply
    661,181.36x = 912,411.12 × 374,727.92
  4. Step 4: Simplify right side
    661,181.36x = 341,905,921,182.47
  5. Step 5: Solve for x
    x = 341,905,921,182.47/661,181.36
  6. Step 6: Final answer
    x = 517,113.67

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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.