Home / 860,936.09-1,189,730.40-645,702.48

Finding the Fourth Proportional to 860,936.09, 1,189,730.40 and 645,702.48

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Solution

The fourth proportional to 860,936.09, 1,189,730.40 and 645,702.48 is: 892,298.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,936.09 : 1,189,730.40 = 645,702.48 : x
  2. Step 2: Convert to fraction form
    860,936.09/1,189,730.40 = 645,702.48/x
  3. Step 3: Cross multiply
    860,936.09x = 1,189,730.40 × 645,702.48
  4. Step 4: Simplify right side
    860,936.09x = 768,211,869,811.39
  5. Step 5: Solve for x
    x = 768,211,869,811.39/860,936.09
  6. Step 6: Final answer
    x = 892,298.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.