Home / 425,651,218.85-638,170,398.59-261,549,919.28

Finding the Fourth Proportional to 425,651,218.85, 638,170,398.59 and 261,549,919.28

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Solution

The fourth proportional to 425,651,218.85, 638,170,398.59 and 261,549,919.28 is: 392,136,587.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,651,218.85 : 638,170,398.59 = 261,549,919.28 : x
  2. Step 2: Convert to fraction form
    425,651,218.85/638,170,398.59 = 261,549,919.28/x
  3. Step 3: Cross multiply
    425,651,218.85x = 638,170,398.59 × 261,549,919.28
  4. Step 4: Simplify right side
    425,651,218.85x = 166,913,416,236,792,192
  5. Step 5: Solve for x
    x = 166,913,416,236,792,192/425,651,218.85
  6. Step 6: Final answer
    x = 392,136,587.06

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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.