Home / 431,138,210.40-646,707,315.60-124,440,328.80

Finding the Fourth Proportional to 431,138,210.40, 646,707,315.60 and 124,440,328.80

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Solution

The fourth proportional to 431,138,210.40, 646,707,315.60 and 124,440,328.80 is: 186,660,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,138,210.40 : 646,707,315.60 = 124,440,328.80 : x
  2. Step 2: Convert to fraction form
    431,138,210.40/646,707,315.60 = 124,440,328.80/x
  3. Step 3: Cross multiply
    431,138,210.40x = 646,707,315.60 × 124,440,328.80
  4. Step 4: Simplify right side
    431,138,210.40x = 80,476,470,990,629,376
  5. Step 5: Solve for x
    x = 80,476,470,990,629,376/431,138,210.40
  6. Step 6: Final answer
    x = 186,660,493.20

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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.