Home / 665,088,004.20-997,632,006.30-378,433,540.20

Finding the Fourth Proportional to 665,088,004.20, 997,632,006.30 and 378,433,540.20

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Solution

The fourth proportional to 665,088,004.20, 997,632,006.30 and 378,433,540.20 is: 567,650,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,088,004.20 : 997,632,006.30 = 378,433,540.20 : x
  2. Step 2: Convert to fraction form
    665,088,004.20/997,632,006.30 = 378,433,540.20/x
  3. Step 3: Cross multiply
    665,088,004.20x = 997,632,006.30 × 378,433,540.20
  4. Step 4: Simplify right side
    665,088,004.20x = 377,537,411,960,937,664
  5. Step 5: Solve for x
    x = 377,537,411,960,937,664/665,088,004.20
  6. Step 6: Final answer
    x = 567,650,310.30

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Similar ratio
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1.5x scale

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.