Home / 640,475,349.76-960,844,056.44-220,242,144.24

Finding the Fourth Proportional to 640,475,349.76, 960,844,056.44 and 220,242,144.24

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Solution

The fourth proportional to 640,475,349.76, 960,844,056.44 and 220,242,144.24 is: 330,408,274.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,475,349.76 : 960,844,056.44 = 220,242,144.24 : x
  2. Step 2: Convert to fraction form
    640,475,349.76/960,844,056.44 = 220,242,144.24/x
  3. Step 3: Cross multiply
    640,475,349.76x = 960,844,056.44 × 220,242,144.24
  4. Step 4: Simplify right side
    640,475,349.76x = 211,618,355,270,605,216
  5. Step 5: Solve for x
    x = 211,618,355,270,605,216/640,475,349.76
  6. Step 6: Final answer
    x = 330,408,274.65

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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.