Home / 520,499,283.87-780,720,187.47-380,583,121.50

Finding the Fourth Proportional to 520,499,283.87, 780,720,187.47 and 380,583,121.50

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Solution

The fourth proportional to 520,499,283.87, 780,720,187.47 and 380,583,121.50 is: 570,853,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,499,283.87 : 780,720,187.47 = 380,583,121.50 : x
  2. Step 2: Convert to fraction form
    520,499,283.87/780,720,187.47 = 380,583,121.50/x
  3. Step 3: Cross multiply
    520,499,283.87x = 780,720,187.47 × 380,583,121.50
  4. Step 4: Simplify right side
    520,499,283.87x = 297,128,925,965,397,824
  5. Step 5: Solve for x
    x = 297,128,925,965,397,824/520,499,283.87
  6. Step 6: Final answer
    x = 570,853,669.11

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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.