Home / 639,781,415.99-960,117,619.79-225,291,623.29

Finding the Fourth Proportional to 639,781,415.99, 960,117,619.79 and 225,291,623.29

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Solution

The fourth proportional to 639,781,415.99, 960,117,619.79 and 225,291,623.29 is: 338,094,311.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,781,415.99 : 960,117,619.79 = 225,291,623.29 : x
  2. Step 2: Convert to fraction form
    639,781,415.99/960,117,619.79 = 225,291,623.29/x
  3. Step 3: Cross multiply
    639,781,415.99x = 960,117,619.79 × 225,291,623.29
  4. Step 4: Simplify right side
    639,781,415.99x = 216,306,457,111,820,128
  5. Step 5: Solve for x
    x = 216,306,457,111,820,128/639,781,415.99
  6. Step 6: Final answer
    x = 338,094,311.13

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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.