Home / 520,928,977.66-780,799,082.52-209,837,532.62

Finding the Fourth Proportional to 520,928,977.66, 780,799,082.52 and 209,837,532.62

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Solution

The fourth proportional to 520,928,977.66, 780,799,082.52 and 209,837,532.62 is: 314,516,872.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,928,977.66 : 780,799,082.52 = 209,837,532.62 : x
  2. Step 2: Convert to fraction form
    520,928,977.66/780,799,082.52 = 209,837,532.62/x
  3. Step 3: Cross multiply
    520,928,977.66x = 780,799,082.52 × 209,837,532.62
  4. Step 4: Simplify right side
    520,928,977.66x = 163,840,952,947,956,576
  5. Step 5: Solve for x
    x = 163,840,952,947,956,576/520,928,977.66
  6. Step 6: Final answer
    x = 314,516,872.69

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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.