Home / 1,389,923,101.18-1,917,627,214.71-787,011,341.50

Finding the Fourth Proportional to 1,389,923,101.18, 1,917,627,214.71 and 787,011,341.50

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Solution

The fourth proportional to 1,389,923,101.18, 1,917,627,214.71 and 787,011,341.50 is: 1,085,811,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,923,101.18 : 1,917,627,214.71 = 787,011,341.50 : x
  2. Step 2: Convert to fraction form
    1,389,923,101.18/1,917,627,214.71 = 787,011,341.50/x
  3. Step 3: Cross multiply
    1,389,923,101.18x = 1,917,627,214.71 × 787,011,341.50
  4. Step 4: Simplify right side
    1,389,923,101.18x = 1,509,194,366,745,825,536
  5. Step 5: Solve for x
    x = 1,509,194,366,745,825,536/1,389,923,101.18
  6. Step 6: Final answer
    x = 1,085,811,413.21

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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.