Home / 1,085,920,314.40-1,628,670,246-421,933,195.36

Finding the Fourth Proportional to 1,085,920,314.40, 1,628,670,246 and 421,933,195.36

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Solution

The fourth proportional to 1,085,920,314.40, 1,628,670,246 and 421,933,195.36 is: 632,818,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,920,314.40 : 1,628,670,246 = 421,933,195.36 : x
  2. Step 2: Convert to fraction form
    1,085,920,314.40/1,628,670,246 = 421,933,195.36/x
  3. Step 3: Cross multiply
    1,085,920,314.40x = 1,628,670,246 × 421,933,195.36
  4. Step 4: Simplify right side
    1,085,920,314.40x = 687,190,041,082,537,344
  5. Step 5: Solve for x
    x = 687,190,041,082,537,344/1,085,920,314.40
  6. Step 6: Final answer
    x = 632,818,110.10

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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.