Home / 320,515,964.67-478,079,167.75-291,091,737.25

Finding the Fourth Proportional to 320,515,964.67, 478,079,167.75 and 291,091,737.25

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Solution

The fourth proportional to 320,515,964.67, 478,079,167.75 and 291,091,737.25 is: 434,190,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,515,964.67 : 478,079,167.75 = 291,091,737.25 : x
  2. Step 2: Convert to fraction form
    320,515,964.67/478,079,167.75 = 291,091,737.25/x
  3. Step 3: Cross multiply
    320,515,964.67x = 478,079,167.75 × 291,091,737.25
  4. Step 4: Simplify right side
    320,515,964.67x = 139,164,895,483,251,552
  5. Step 5: Solve for x
    x = 139,164,895,483,251,552/320,515,964.67
  6. Step 6: Final answer
    x = 434,190,214.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.