Home / 639,928,262,807.50-959,220,458,807.60-215,309,111,280.24

Finding the Fourth Proportional to 639,928,262,807.50, 959,220,458,807.60 and 215,309,111,280.24

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Solution

The fourth proportional to 639,928,262,807.50, 959,220,458,807.60 and 215,309,111,280.24 is: 322,737,588,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,928,262,807.50 : 959,220,458,807.60 = 215,309,111,280.24 : x
  2. Step 2: Convert to fraction form
    639,928,262,807.50/959,220,458,807.60 = 215,309,111,280.24/x
  3. Step 3: Cross multiply
    639,928,262,807.50x = 959,220,458,807.60 × 215,309,111,280.24
  4. Step 4: Simplify right side
    639,928,262,807.50x = 206,528,904,507,688,388,395,008
  5. Step 5: Solve for x
    x = 206,528,904,507,688,388,395,008/639,928,262,807.50
  6. Step 6: Final answer
    x = 322,737,588,744.09

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1.5x scale

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.