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Finding the Fourth Proportional to 640,692.50, 884,008.68 and 382,519.14

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Solution

The fourth proportional to 640,692.50, 884,008.68 and 382,519.14 is: 527,788.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,692.50 : 884,008.68 = 382,519.14 : x
  2. Step 2: Convert to fraction form
    640,692.50/884,008.68 = 382,519.14/x
  3. Step 3: Cross multiply
    640,692.50x = 884,008.68 × 382,519.14
  4. Step 4: Simplify right side
    640,692.50x = 338,150,240,026.14
  5. Step 5: Solve for x
    x = 338,150,240,026.14/640,692.50
  6. Step 6: Final answer
    x = 527,788.67

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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.