Home / 878,047,076.84-1,211,359,329.06-506,697,353.96

Finding the Fourth Proportional to 878,047,076.84, 1,211,359,329.06 and 506,697,353.96

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Solution

The fourth proportional to 878,047,076.84, 1,211,359,329.06 and 506,697,353.96 is: 699,042,890.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,047,076.84 : 1,211,359,329.06 = 506,697,353.96 : x
  2. Step 2: Convert to fraction form
    878,047,076.84/1,211,359,329.06 = 506,697,353.96/x
  3. Step 3: Cross multiply
    878,047,076.84x = 1,211,359,329.06 × 506,697,353.96
  4. Step 4: Simplify right side
    878,047,076.84x = 613,792,566,729,462,912
  5. Step 5: Solve for x
    x = 613,792,566,729,462,912/878,047,076.84
  6. Step 6: Final answer
    x = 699,042,890.66

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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.