Home / 858,485.36-1,287,922.44-458,915.60

Finding the Fourth Proportional to 858,485.36, 1,287,922.44 and 458,915.60

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Solution

The fourth proportional to 858,485.36, 1,287,922.44 and 458,915.60 is: 688,477.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,485.36 : 1,287,922.44 = 458,915.60 : x
  2. Step 2: Convert to fraction form
    858,485.36/1,287,922.44 = 458,915.60/x
  3. Step 3: Cross multiply
    858,485.36x = 1,287,922.44 × 458,915.60
  4. Step 4: Simplify right side
    858,485.36x = 591,047,699,306.06
  5. Step 5: Solve for x
    x = 591,047,699,306.06/858,485.36
  6. Step 6: Final answer
    x = 688,477.32

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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.