Home / 847,219.80-1,270,829.70-286,246.20

Finding the Fourth Proportional to 847,219.80, 1,270,829.70 and 286,246.20

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Solution

The fourth proportional to 847,219.80, 1,270,829.70 and 286,246.20 is: 429,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,219.80 : 1,270,829.70 = 286,246.20 : x
  2. Step 2: Convert to fraction form
    847,219.80/1,270,829.70 = 286,246.20/x
  3. Step 3: Cross multiply
    847,219.80x = 1,270,829.70 × 286,246.20
  4. Step 4: Simplify right side
    847,219.80x = 363,770,172,472.14
  5. Step 5: Solve for x
    x = 363,770,172,472.14/847,219.80
  6. Step 6: Final answer
    x = 429,369.30

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Double scale
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Similar ratio
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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.