Home / 431,340,412.80-647,010,619.20-308,896,406.40

Finding the Fourth Proportional to 431,340,412.80, 647,010,619.20 and 308,896,406.40

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Solution

The fourth proportional to 431,340,412.80, 647,010,619.20 and 308,896,406.40 is: 463,344,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,340,412.80 : 647,010,619.20 = 308,896,406.40 : x
  2. Step 2: Convert to fraction form
    431,340,412.80/647,010,619.20 = 308,896,406.40/x
  3. Step 3: Cross multiply
    431,340,412.80x = 647,010,619.20 × 308,896,406.40
  4. Step 4: Simplify right side
    431,340,412.80x = 199,859,255,173,518,848
  5. Step 5: Solve for x
    x = 199,859,255,173,518,848/431,340,412.80
  6. Step 6: Final answer
    x = 463,344,609.60

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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.