Home / 686,118.04-946,828.70-380,191.74

Finding the Fourth Proportional to 686,118.04, 946,828.70 and 380,191.74

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Solution

The fourth proportional to 686,118.04, 946,828.70 and 380,191.74 is: 524,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,118.04 : 946,828.70 = 380,191.74 : x
  2. Step 2: Convert to fraction form
    686,118.04/946,828.70 = 380,191.74/x
  3. Step 3: Cross multiply
    686,118.04x = 946,828.70 × 380,191.74
  4. Step 4: Simplify right side
    686,118.04x = 359,976,450,934.94
  5. Step 5: Solve for x
    x = 359,976,450,934.94/686,118.04
  6. Step 6: Final answer
    x = 524,656.74

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.