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Finding the Fourth Proportional to 579,088.40, 866,789.40 and 413,200.40

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Solution

The fourth proportional to 579,088.40, 866,789.40 and 413,200.40 is: 618,485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,088.40 : 866,789.40 = 413,200.40 : x
  2. Step 2: Convert to fraction form
    579,088.40/866,789.40 = 413,200.40/x
  3. Step 3: Cross multiply
    579,088.40x = 866,789.40 × 413,200.40
  4. Step 4: Simplify right side
    579,088.40x = 358,157,726,795.76
  5. Step 5: Solve for x
    x = 358,157,726,795.76/579,088.40
  6. Step 6: Final answer
    x = 618,485.41

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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.