Home / 807,422,328.20-1,211,700,362.70-347,690,433.80

Finding the Fourth Proportional to 807,422,328.20, 1,211,700,362.70 and 347,690,433.80

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Solution

The fourth proportional to 807,422,328.20, 1,211,700,362.70 and 347,690,433.80 is: 521,779,755.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,422,328.20 : 1,211,700,362.70 = 347,690,433.80 : x
  2. Step 2: Convert to fraction form
    807,422,328.20/1,211,700,362.70 = 347,690,433.80/x
  3. Step 3: Cross multiply
    807,422,328.20x = 1,211,700,362.70 × 347,690,433.80
  4. Step 4: Simplify right side
    807,422,328.20x = 421,296,624,742,780,352
  5. Step 5: Solve for x
    x = 421,296,624,742,780,352/807,422,328.20
  6. Step 6: Final answer
    x = 521,779,755.19

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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.