Home / 447,890.18-618,168.93-256,966.70

Finding the Fourth Proportional to 447,890.18, 618,168.93 and 256,966.70

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Solution

The fourth proportional to 447,890.18, 618,168.93 and 256,966.70 is: 354,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,890.18 : 618,168.93 = 256,966.70 : x
  2. Step 2: Convert to fraction form
    447,890.18/618,168.93 = 256,966.70/x
  3. Step 3: Cross multiply
    447,890.18x = 618,168.93 × 256,966.70
  4. Step 4: Simplify right side
    447,890.18x = 158,848,829,984.63
  5. Step 5: Solve for x
    x = 158,848,829,984.63/447,890.18
  6. Step 6: Final answer
    x = 354,660.22

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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.