Home / 813,473,420.20-1,122,605,619.98-456,320,367.38

Finding the Fourth Proportional to 813,473,420.20, 1,122,605,619.98 and 456,320,367.38

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Solution

The fourth proportional to 813,473,420.20, 1,122,605,619.98 and 456,320,367.38 is: 629,729,006.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,473,420.20 : 1,122,605,619.98 = 456,320,367.38 : x
  2. Step 2: Convert to fraction form
    813,473,420.20/1,122,605,619.98 = 456,320,367.38/x
  3. Step 3: Cross multiply
    813,473,420.20x = 1,122,605,619.98 × 456,320,367.38
  4. Step 4: Simplify right side
    813,473,420.20x = 512,267,808,932,651,136
  5. Step 5: Solve for x
    x = 512,267,808,932,651,136/813,473,420.20
  6. Step 6: Final answer
    x = 629,729,006.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.