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Finding the Fourth Proportional to 579,008.40, 866,669.40 and 413,120.40

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Solution

The fourth proportional to 579,008.40, 866,669.40 and 413,120.40 is: 618,365.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,008.40 : 866,669.40 = 413,120.40 : x
  2. Step 2: Convert to fraction form
    579,008.40/866,669.40 = 413,120.40/x
  3. Step 3: Cross multiply
    579,008.40x = 866,669.40 × 413,120.40
  4. Step 4: Simplify right side
    579,008.40x = 358,038,809,195.76
  5. Step 5: Solve for x
    x = 358,038,809,195.76/579,008.40
  6. Step 6: Final answer
    x = 618,365.48

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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.