Home / 645,533.15-891,023.31-430,672.68

Finding the Fourth Proportional to 645,533.15, 891,023.31 and 430,672.68

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Solution

The fourth proportional to 645,533.15, 891,023.31 and 430,672.68 is: 594,453.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,533.15 : 891,023.31 = 430,672.68 : x
  2. Step 2: Convert to fraction form
    645,533.15/891,023.31 = 430,672.68/x
  3. Step 3: Cross multiply
    645,533.15x = 891,023.31 × 430,672.68
  4. Step 4: Simplify right side
    645,533.15x = 383,739,396,860.17
  5. Step 5: Solve for x
    x = 383,739,396,860.17/645,533.15
  6. Step 6: Final answer
    x = 594,453.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.