Home / 769,384.71-1,153,932.11-208,345.35

Finding the Fourth Proportional to 769,384.71, 1,153,932.11 and 208,345.35

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Solution

The fourth proportional to 769,384.71, 1,153,932.11 and 208,345.35 is: 312,478.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,384.71 : 1,153,932.11 = 208,345.35 : x
  2. Step 2: Convert to fraction form
    769,384.71/1,153,932.11 = 208,345.35/x
  3. Step 3: Cross multiply
    769,384.71x = 1,153,932.11 × 208,345.35
  4. Step 4: Simplify right side
    769,384.71x = 240,416,388,292.46
  5. Step 5: Solve for x
    x = 240,416,388,292.46/769,384.71
  6. Step 6: Final answer
    x = 312,478.77

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Double scale
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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.