Home / 857,862.18-1,285,956.34-408,462.30

Finding the Fourth Proportional to 857,862.18, 1,285,956.34 and 408,462.30

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Solution

The fourth proportional to 857,862.18, 1,285,956.34 and 408,462.30 is: 612,294.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,862.18 : 1,285,956.34 = 408,462.30 : x
  2. Step 2: Convert to fraction form
    857,862.18/1,285,956.34 = 408,462.30/x
  3. Step 3: Cross multiply
    857,862.18x = 1,285,956.34 × 408,462.30
  4. Step 4: Simplify right side
    857,862.18x = 525,264,684,335.98
  5. Step 5: Solve for x
    x = 525,264,684,335.98/857,862.18
  6. Step 6: Final answer
    x = 612,294.95

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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.