Home / 807,422,307.20-1,211,700,331.20-347,690,412.80

Finding the Fourth Proportional to 807,422,307.20, 1,211,700,331.20 and 347,690,412.80

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Solution

The fourth proportional to 807,422,307.20, 1,211,700,331.20 and 347,690,412.80 is: 521,779,723.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,422,307.20 : 1,211,700,331.20 = 347,690,412.80 : x
  2. Step 2: Convert to fraction form
    807,422,307.20/1,211,700,331.20 = 347,690,412.80/x
  3. Step 3: Cross multiply
    807,422,307.20x = 1,211,700,331.20 × 347,690,412.80
  4. Step 4: Simplify right side
    807,422,307.20x = 421,296,588,344,824,768
  5. Step 5: Solve for x
    x = 421,296,588,344,824,768/807,422,307.20
  6. Step 6: Final answer
    x = 521,779,723.68

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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.