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Finding the Fourth Proportional to 655,263.35, 904,113.82 and 368,678.87

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Solution

The fourth proportional to 655,263.35, 904,113.82 and 368,678.87 is: 508,692.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,263.35 : 904,113.82 = 368,678.87 : x
  2. Step 2: Convert to fraction form
    655,263.35/904,113.82 = 368,678.87/x
  3. Step 3: Cross multiply
    655,263.35x = 904,113.82 × 368,678.87
  4. Step 4: Simplify right side
    655,263.35x = 333,327,661,508.98
  5. Step 5: Solve for x
    x = 333,327,661,508.98/655,263.35
  6. Step 6: Final answer
    x = 508,692.67

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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.