Home / 485,017,663.89-727,515,991.40-135,254,399.35

Finding the Fourth Proportional to 485,017,663.89, 727,515,991.40 and 135,254,399.35

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Solution

The fourth proportional to 485,017,663.89, 727,515,991.40 and 135,254,399.35 is: 202,878,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,017,663.89 : 727,515,991.40 = 135,254,399.35 : x
  2. Step 2: Convert to fraction form
    485,017,663.89/727,515,991.40 = 135,254,399.35/x
  3. Step 3: Cross multiply
    485,017,663.89x = 727,515,991.40 × 135,254,399.35
  4. Step 4: Simplify right side
    485,017,663.89x = 98,399,738,430,012,912
  5. Step 5: Solve for x
    x = 98,399,738,430,012,912/485,017,663.89
  6. Step 6: Final answer
    x = 202,878,669.70

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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.