Home / 857,875.83-1,285,977.02-408,475.95

Finding the Fourth Proportional to 857,875.83, 1,285,977.02 and 408,475.95

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Solution

The fourth proportional to 857,875.83, 1,285,977.02 and 408,475.95 is: 612,315.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,875.83 : 1,285,977.02 = 408,475.95 : x
  2. Step 2: Convert to fraction form
    857,875.83/1,285,977.02 = 408,475.95/x
  3. Step 3: Cross multiply
    857,875.83x = 1,285,977.02 × 408,475.95
  4. Step 4: Simplify right side
    857,875.83x = 525,290,682,880.29
  5. Step 5: Solve for x
    x = 525,290,682,880.29/857,875.83
  6. Step 6: Final answer
    x = 612,315.52

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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.