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Finding the Fourth Proportional to 607,999.20, 911,998.80 and 578,968.80

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Solution

The fourth proportional to 607,999.20, 911,998.80 and 578,968.80 is: 868,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,999.20 : 911,998.80 = 578,968.80 : x
  2. Step 2: Convert to fraction form
    607,999.20/911,998.80 = 578,968.80/x
  3. Step 3: Cross multiply
    607,999.20x = 911,998.80 × 578,968.80
  4. Step 4: Simplify right side
    607,999.20x = 528,018,850,837.44
  5. Step 5: Solve for x
    x = 528,018,850,837.44/607,999.20
  6. Step 6: Final answer
    x = 868,453.20

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1.5x scale

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.