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Finding the Fourth Proportional to 665,240.63, 996,411.60 and 437,278.91

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Solution

The fourth proportional to 665,240.63, 996,411.60 and 437,278.91 is: 654,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,240.63 : 996,411.60 = 437,278.91 : x
  2. Step 2: Convert to fraction form
    665,240.63/996,411.60 = 437,278.91/x
  3. Step 3: Cross multiply
    665,240.63x = 996,411.60 × 437,278.91
  4. Step 4: Simplify right side
    665,240.63x = 435,709,773,377.30
  5. Step 5: Solve for x
    x = 435,709,773,377.30/665,240.63
  6. Step 6: Final answer
    x = 654,965.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.