Home / 640,487,730.45-960,731,595.68-511,347,567.45

Finding the Fourth Proportional to 640,487,730.45, 960,731,595.68 and 511,347,567.45

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Solution

The fourth proportional to 640,487,730.45, 960,731,595.68 and 511,347,567.45 is: 767,021,351.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,487,730.45 : 960,731,595.68 = 511,347,567.45 : x
  2. Step 2: Convert to fraction form
    640,487,730.45/960,731,595.68 = 511,347,567.45/x
  3. Step 3: Cross multiply
    640,487,730.45x = 960,731,595.68 × 511,347,567.45
  4. Step 4: Simplify right side
    640,487,730.45x = 491,267,764,420,768,128
  5. Step 5: Solve for x
    x = 491,267,764,420,768,128/640,487,730.45
  6. Step 6: Final answer
    x = 767,021,351.18

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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.