Home / 553,431,556.86-763,740,630.28-315,273,211.68

Finding the Fourth Proportional to 553,431,556.86, 763,740,630.28 and 315,273,211.68

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Solution

The fourth proportional to 553,431,556.86, 763,740,630.28 and 315,273,211.68 is: 435,079,927.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,431,556.86 : 763,740,630.28 = 315,273,211.68 : x
  2. Step 2: Convert to fraction form
    553,431,556.86/763,740,630.28 = 315,273,211.68/x
  3. Step 3: Cross multiply
    553,431,556.86x = 763,740,630.28 × 315,273,211.68
  4. Step 4: Simplify right side
    553,431,556.86x = 240,786,961,398,883,040
  5. Step 5: Solve for x
    x = 240,786,961,398,883,040/553,431,556.86
  6. Step 6: Final answer
    x = 435,079,927.07

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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.