Home / 646,813,090.80-970,219,636.20-258,443,881.20

Finding the Fourth Proportional to 646,813,090.80, 970,219,636.20 and 258,443,881.20

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Solution

The fourth proportional to 646,813,090.80, 970,219,636.20 and 258,443,881.20 is: 387,665,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,813,090.80 : 970,219,636.20 = 258,443,881.20 : x
  2. Step 2: Convert to fraction form
    646,813,090.80/970,219,636.20 = 258,443,881.20/x
  3. Step 3: Cross multiply
    646,813,090.80x = 970,219,636.20 × 258,443,881.20
  4. Step 4: Simplify right side
    646,813,090.80x = 250,747,328,395,980,032
  5. Step 5: Solve for x
    x = 250,747,328,395,980,032/646,813,090.80
  6. Step 6: Final answer
    x = 387,665,821.80

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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.