Home / 833,618.50-1,248,429.75-427,742.62

Finding the Fourth Proportional to 833,618.50, 1,248,429.75 and 427,742.62

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Solution

The fourth proportional to 833,618.50, 1,248,429.75 and 427,742.62 is: 640,588.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    833,618.50 : 1,248,429.75 = 427,742.62 : x
  2. Step 2: Convert to fraction form
    833,618.50/1,248,429.75 = 427,742.62/x
  3. Step 3: Cross multiply
    833,618.50x = 1,248,429.75 × 427,742.62
  4. Step 4: Simplify right side
    833,618.50x = 534,006,612,150.95
  5. Step 5: Solve for x
    x = 534,006,612,150.95/833,618.50
  6. Step 6: Final answer
    x = 640,588.73

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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.