Home / 858,795.30-1,287,091.35-479,715.30

Finding the Fourth Proportional to 858,795.30, 1,287,091.35 and 479,715.30

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Solution

The fourth proportional to 858,795.30, 1,287,091.35 and 479,715.30 is: 718,957.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,795.30 : 1,287,091.35 = 479,715.30 : x
  2. Step 2: Convert to fraction form
    858,795.30/1,287,091.35 = 479,715.30/x
  3. Step 3: Cross multiply
    858,795.30x = 1,287,091.35 × 479,715.30
  4. Step 4: Simplify right side
    858,795.30x = 617,437,413,092.66
  5. Step 5: Solve for x
    x = 617,437,413,092.66/858,795.30
  6. Step 6: Final answer
    x = 718,957.61

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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.