Home / 708,588,752.80-1,062,883,129.20-639,713,999.20

Finding the Fourth Proportional to 708,588,752.80, 1,062,883,129.20 and 639,713,999.20

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Solution

The fourth proportional to 708,588,752.80, 1,062,883,129.20 and 639,713,999.20 is: 959,570,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,588,752.80 : 1,062,883,129.20 = 639,713,999.20 : x
  2. Step 2: Convert to fraction form
    708,588,752.80/1,062,883,129.20 = 639,713,999.20/x
  3. Step 3: Cross multiply
    708,588,752.80x = 1,062,883,129.20 × 639,713,999.20
  4. Step 4: Simplify right side
    708,588,752.80x = 679,941,217,262,742,400
  5. Step 5: Solve for x
    x = 679,941,217,262,742,400/708,588,752.80
  6. Step 6: Final answer
    x = 959,570,998.80

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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.