Home / 1,039,387.80-1,559,081.70-408,091.80

Finding the Fourth Proportional to 1,039,387.80, 1,559,081.70 and 408,091.80

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Solution

The fourth proportional to 1,039,387.80, 1,559,081.70 and 408,091.80 is: 612,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039,387.80 : 1,559,081.70 = 408,091.80 : x
  2. Step 2: Convert to fraction form
    1,039,387.80/1,559,081.70 = 408,091.80/x
  3. Step 3: Cross multiply
    1,039,387.80x = 1,559,081.70 × 408,091.80
  4. Step 4: Simplify right side
    1,039,387.80x = 636,248,457,300.06
  5. Step 5: Solve for x
    x = 636,248,457,300.06/1,039,387.80
  6. Step 6: Final answer
    x = 612,137.70

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Double scale
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Similar ratio
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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.