Home / 878,690,031.80-1,318,035,047.70-780,054,582.20

Finding the Fourth Proportional to 878,690,031.80, 1,318,035,047.70 and 780,054,582.20

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Solution

The fourth proportional to 878,690,031.80, 1,318,035,047.70 and 780,054,582.20 is: 1,170,081,873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,690,031.80 : 1,318,035,047.70 = 780,054,582.20 : x
  2. Step 2: Convert to fraction form
    878,690,031.80/1,318,035,047.70 = 780,054,582.20/x
  3. Step 3: Cross multiply
    878,690,031.80x = 1,318,035,047.70 × 780,054,582.20
  4. Step 4: Simplify right side
    878,690,031.80x = 1,028,139,278,458,580,608
  5. Step 5: Solve for x
    x = 1,028,139,278,458,580,608/878,690,031.80
  6. Step 6: Final answer
    x = 1,170,081,873.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.