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Finding the Fourth Proportional to 625,503,756.54, 863,208,368.22 and 343,243,728.54

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Solution

The fourth proportional to 625,503,756.54, 863,208,368.22 and 343,243,728.54 is: 473,683,580.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,503,756.54 : 863,208,368.22 = 343,243,728.54 : x
  2. Step 2: Convert to fraction form
    625,503,756.54/863,208,368.22 = 343,243,728.54/x
  3. Step 3: Cross multiply
    625,503,756.54x = 863,208,368.22 × 343,243,728.54
  4. Step 4: Simplify right side
    625,503,756.54x = 296,290,858,814,762,048
  5. Step 5: Solve for x
    x = 296,290,858,814,762,048/625,503,756.54
  6. Step 6: Final answer
    x = 473,683,580.18

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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.