Home / 430,355.52-645,634.08-423,215.04

Finding the Fourth Proportional to 430,355.52, 645,634.08 and 423,215.04

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Solution

The fourth proportional to 430,355.52, 645,634.08 and 423,215.04 is: 634,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,355.52 : 645,634.08 = 423,215.04 : x
  2. Step 2: Convert to fraction form
    430,355.52/645,634.08 = 423,215.04/x
  3. Step 3: Cross multiply
    430,355.52x = 645,634.08 × 423,215.04
  4. Step 4: Simplify right side
    430,355.52x = 273,242,052,992.56
  5. Step 5: Solve for x
    x = 273,242,052,992.56/430,355.52
  6. Step 6: Final answer
    x = 634,921.69

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1.5x scale

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.