Home / 809,784.38-1,215,423.80-410,705.40

Finding the Fourth Proportional to 809,784.38, 1,215,423.80 and 410,705.40

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Solution

The fourth proportional to 809,784.38, 1,215,423.80 and 410,705.40 is: 616,437.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,784.38 : 1,215,423.80 = 410,705.40 : x
  2. Step 2: Convert to fraction form
    809,784.38/1,215,423.80 = 410,705.40/x
  3. Step 3: Cross multiply
    809,784.38x = 1,215,423.80 × 410,705.40
  4. Step 4: Simplify right side
    809,784.38x = 499,181,115,894.99
  5. Step 5: Solve for x
    x = 499,181,115,894.99/809,784.38
  6. Step 6: Final answer
    x = 616,437.08

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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.