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Finding the Fourth Proportional to 860,896.96, 1,188,020 and 478,915.52

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Solution

The fourth proportional to 860,896.96, 1,188,020 and 478,915.52 is: 660,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,896.96 : 1,188,020 = 478,915.52 : x
  2. Step 2: Convert to fraction form
    860,896.96/1,188,020 = 478,915.52/x
  3. Step 3: Cross multiply
    860,896.96x = 1,188,020 × 478,915.52
  4. Step 4: Simplify right side
    860,896.96x = 568,961,216,070.40
  5. Step 5: Solve for x
    x = 568,961,216,070.40/860,896.96
  6. Step 6: Final answer
    x = 660,893.51

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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.