Home / 686,456.16-947,264.40-384,591.84

Finding the Fourth Proportional to 686,456.16, 947,264.40 and 384,591.84

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Solution

The fourth proportional to 686,456.16, 947,264.40 and 384,591.84 is: 530,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,456.16 : 947,264.40 = 384,591.84 : x
  2. Step 2: Convert to fraction form
    686,456.16/947,264.40 = 384,591.84/x
  3. Step 3: Cross multiply
    686,456.16x = 947,264.40 × 384,591.84
  4. Step 4: Simplify right side
    686,456.16x = 364,310,158,562.50
  5. Step 5: Solve for x
    x = 364,310,158,562.50/686,456.16
  6. Step 6: Final answer
    x = 530,711.47

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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.