Home / 431,260,022.40-646,449,134.40-212,574,019.20

Finding the Fourth Proportional to 431,260,022.40, 646,449,134.40 and 212,574,019.20

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Solution

The fourth proportional to 431,260,022.40, 646,449,134.40 and 212,574,019.20 is: 318,643,703.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,260,022.40 : 646,449,134.40 = 212,574,019.20 : x
  2. Step 2: Convert to fraction form
    431,260,022.40/646,449,134.40 = 212,574,019.20/x
  3. Step 3: Cross multiply
    431,260,022.40x = 646,449,134.40 × 212,574,019.20
  4. Step 4: Simplify right side
    431,260,022.40x = 137,418,290,707,768,960
  5. Step 5: Solve for x
    x = 137,418,290,707,768,960/431,260,022.40
  6. Step 6: Final answer
    x = 318,643,703.50

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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.