Home / 655,918,890.72-905,174,092.20-373,657,148.16

Finding the Fourth Proportional to 655,918,890.72, 905,174,092.20 and 373,657,148.16

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Solution

The fourth proportional to 655,918,890.72, 905,174,092.20 and 373,657,148.16 is: 515,650,295.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,918,890.72 : 905,174,092.20 = 373,657,148.16 : x
  2. Step 2: Convert to fraction form
    655,918,890.72/905,174,092.20 = 373,657,148.16/x
  3. Step 3: Cross multiply
    655,918,890.72x = 905,174,092.20 × 373,657,148.16
  4. Step 4: Simplify right side
    655,918,890.72x = 338,224,769,879,768,960
  5. Step 5: Solve for x
    x = 338,224,769,879,768,960/655,918,890.72
  6. Step 6: Final answer
    x = 515,650,295.59

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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.