Home / 389,966.80-583,966.05-256,122.40

Finding the Fourth Proportional to 389,966.80, 583,966.05 and 256,122.40

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Solution

The fourth proportional to 389,966.80, 583,966.05 and 256,122.40 is: 383,537.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,966.80 : 583,966.05 = 256,122.40 : x
  2. Step 2: Convert to fraction form
    389,966.80/583,966.05 = 256,122.40/x
  3. Step 3: Cross multiply
    389,966.80x = 583,966.05 × 256,122.40
  4. Step 4: Simplify right side
    389,966.80x = 149,566,786,244.52
  5. Step 5: Solve for x
    x = 149,566,786,244.52/389,966.80
  6. Step 6: Final answer
    x = 383,537.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.