Home / 717,143,941.66-989,632,511.65-399,587,780.02

Finding the Fourth Proportional to 717,143,941.66, 989,632,511.65 and 399,587,780.02

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Solution

The fourth proportional to 717,143,941.66, 989,632,511.65 and 399,587,780.02 is: 551,416,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,143,941.66 : 989,632,511.65 = 399,587,780.02 : x
  2. Step 2: Convert to fraction form
    717,143,941.66/989,632,511.65 = 399,587,780.02/x
  3. Step 3: Cross multiply
    717,143,941.66x = 989,632,511.65 × 399,587,780.02
  4. Step 4: Simplify right side
    717,143,941.66x = 395,445,058,365,840,256
  5. Step 5: Solve for x
    x = 395,445,058,365,840,256/717,143,941.66
  6. Step 6: Final answer
    x = 551,416,578.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.