Home / 805,143,185.87-1,207,415,744.80-280,377,527.70

Finding the Fourth Proportional to 805,143,185.87, 1,207,415,744.80 and 280,377,527.70

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Solution

The fourth proportional to 805,143,185.87, 1,207,415,744.80 and 280,377,527.70 is: 420,462,158.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,143,185.87 : 1,207,415,744.80 = 280,377,527.70 : x
  2. Step 2: Convert to fraction form
    805,143,185.87/1,207,415,744.80 = 280,377,527.70/x
  3. Step 3: Cross multiply
    805,143,185.87x = 1,207,415,744.80 × 280,377,527.70
  4. Step 4: Simplify right side
    805,143,185.87x = 338,532,241,432,377,152
  5. Step 5: Solve for x
    x = 338,532,241,432,377,152/805,143,185.87
  6. Step 6: Final answer
    x = 420,462,158.00

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1.5x scale

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.