Home / 686,117.04-946,827.32-380,190.74

Finding the Fourth Proportional to 686,117.04, 946,827.32 and 380,190.74

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Solution

The fourth proportional to 686,117.04, 946,827.32 and 380,190.74 is: 524,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,117.04 : 946,827.32 = 380,190.74 : x
  2. Step 2: Convert to fraction form
    686,117.04/946,827.32 = 380,190.74/x
  3. Step 3: Cross multiply
    686,117.04x = 946,827.32 × 380,190.74
  4. Step 4: Simplify right side
    686,117.04x = 359,974,979,443.02
  5. Step 5: Solve for x
    x = 359,974,979,443.02/686,117.04
  6. Step 6: Final answer
    x = 524,655.36

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.