Home / 992,457.80-1,489,124.10-459,704.60

Finding the Fourth Proportional to 992,457.80, 1,489,124.10 and 459,704.60

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Solution

The fourth proportional to 992,457.80, 1,489,124.10 and 459,704.60 is: 689,759.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,457.80 : 1,489,124.10 = 459,704.60 : x
  2. Step 2: Convert to fraction form
    992,457.80/1,489,124.10 = 459,704.60/x
  3. Step 3: Cross multiply
    992,457.80x = 1,489,124.10 × 459,704.60
  4. Step 4: Simplify right side
    992,457.80x = 684,557,198,740.86
  5. Step 5: Solve for x
    x = 684,557,198,740.86/992,457.80
  6. Step 6: Final answer
    x = 689,759.50

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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.