Home / 878,047,074.84-1,211,359,326.30-506,697,351.96

Finding the Fourth Proportional to 878,047,074.84, 1,211,359,326.30 and 506,697,351.96

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Solution

The fourth proportional to 878,047,074.84, 1,211,359,326.30 and 506,697,351.96 is: 699,042,887.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,047,074.84 : 1,211,359,326.30 = 506,697,351.96 : x
  2. Step 2: Convert to fraction form
    878,047,074.84/1,211,359,326.30 = 506,697,351.96/x
  3. Step 3: Cross multiply
    878,047,074.84x = 1,211,359,326.30 × 506,697,351.96
  4. Step 4: Simplify right side
    878,047,074.84x = 613,792,562,908,259,584
  5. Step 5: Solve for x
    x = 613,792,562,908,259,584/878,047,074.84
  6. Step 6: Final answer
    x = 699,042,887.90

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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.