Home / 430,225.79-643,449.77-383,172.35

Finding the Fourth Proportional to 430,225.79, 643,449.77 and 383,172.35

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Solution

The fourth proportional to 430,225.79, 643,449.77 and 383,172.35 is: 573,076.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,225.79 : 643,449.77 = 383,172.35 : x
  2. Step 2: Convert to fraction form
    430,225.79/643,449.77 = 383,172.35/x
  3. Step 3: Cross multiply
    430,225.79x = 643,449.77 × 383,172.35
  4. Step 4: Simplify right side
    430,225.79x = 246,552,158,562.00
  5. Step 5: Solve for x
    x = 246,552,158,562.00/430,225.79
  6. Step 6: Final answer
    x = 573,076.19

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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.