Home / 639,231,690.90-958,847,536.35-432,607,430.10

Finding the Fourth Proportional to 639,231,690.90, 958,847,536.35 and 432,607,430.10

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Solution

The fourth proportional to 639,231,690.90, 958,847,536.35 and 432,607,430.10 is: 648,911,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,231,690.90 : 958,847,536.35 = 432,607,430.10 : x
  2. Step 2: Convert to fraction form
    639,231,690.90/958,847,536.35 = 432,607,430.10/x
  3. Step 3: Cross multiply
    639,231,690.90x = 958,847,536.35 × 432,607,430.10
  4. Step 4: Simplify right side
    639,231,690.90x = 414,804,568,558,089,856
  5. Step 5: Solve for x
    x = 414,804,568,558,089,856/639,231,690.90
  6. Step 6: Final answer
    x = 648,911,145.15

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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.