Home / 430,658.10-645,552.88-270,848.23

Finding the Fourth Proportional to 430,658.10, 645,552.88 and 270,848.23

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Solution

The fourth proportional to 430,658.10, 645,552.88 and 270,848.23 is: 405,999.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,658.10 : 645,552.88 = 270,848.23 : x
  2. Step 2: Convert to fraction form
    430,658.10/645,552.88 = 270,848.23/x
  3. Step 3: Cross multiply
    430,658.10x = 645,552.88 × 270,848.23
  4. Step 4: Simplify right side
    430,658.10x = 174,846,854,919.40
  5. Step 5: Solve for x
    x = 174,846,854,919.40/430,658.10
  6. Step 6: Final answer
    x = 405,999.23

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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.