Home / 427,536,019.20-641,304,028.80-185,671,315.20

Finding the Fourth Proportional to 427,536,019.20, 641,304,028.80 and 185,671,315.20

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Solution

The fourth proportional to 427,536,019.20, 641,304,028.80 and 185,671,315.20 is: 278,506,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,536,019.20 : 641,304,028.80 = 185,671,315.20 : x
  2. Step 2: Convert to fraction form
    427,536,019.20/641,304,028.80 = 185,671,315.20/x
  3. Step 3: Cross multiply
    427,536,019.20x = 641,304,028.80 × 185,671,315.20
  4. Step 4: Simplify right side
    427,536,019.20x = 119,071,762,470,354,656
  5. Step 5: Solve for x
    x = 119,071,762,470,354,656/427,536,019.20
  6. Step 6: Final answer
    x = 278,506,972.80

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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.