Home / 686,685.42-947,436.10-396,277.04

Finding the Fourth Proportional to 686,685.42, 947,436.10 and 396,277.04

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Solution

The fourth proportional to 686,685.42, 947,436.10 and 396,277.04 is: 546,752.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,685.42 : 947,436.10 = 396,277.04 : x
  2. Step 2: Convert to fraction form
    686,685.42/947,436.10 = 396,277.04/x
  3. Step 3: Cross multiply
    686,685.42x = 947,436.10 × 396,277.04
  4. Step 4: Simplify right side
    686,685.42x = 375,447,174,675.04
  5. Step 5: Solve for x
    x = 375,447,174,675.04/686,685.42
  6. Step 6: Final answer
    x = 546,752.80

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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.