Home / 857,784.93-1,285,840.86-408,384.98

Finding the Fourth Proportional to 857,784.93, 1,285,840.86 and 408,384.98

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Solution

The fourth proportional to 857,784.93, 1,285,840.86 and 408,384.98 is: 612,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,784.93 : 1,285,840.86 = 408,384.98 : x
  2. Step 2: Convert to fraction form
    857,784.93/1,285,840.86 = 408,384.98/x
  3. Step 3: Cross multiply
    857,784.93x = 1,285,840.86 × 408,384.98
  4. Step 4: Simplify right side
    857,784.93x = 525,118,093,894.28
  5. Step 5: Solve for x
    x = 525,118,093,894.28/857,784.93
  6. Step 6: Final answer
    x = 612,179.20

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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.