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Finding the Fourth Proportional to 807,821,930.90, 1,114,746,220.63 and 468,704,135.65

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Solution

The fourth proportional to 807,821,930.90, 1,114,746,220.63 and 468,704,135.65 is: 646,783,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,821,930.90 : 1,114,746,220.63 = 468,704,135.65 : x
  2. Step 2: Convert to fraction form
    807,821,930.90/1,114,746,220.63 = 468,704,135.65/x
  3. Step 3: Cross multiply
    807,821,930.90x = 1,114,746,220.63 × 468,704,135.65
  4. Step 4: Simplify right side
    807,821,930.90x = 522,486,163,807,263,936
  5. Step 5: Solve for x
    x = 522,486,163,807,263,936/807,821,930.90
  6. Step 6: Final answer
    x = 646,783,831.71

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Double scale
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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.