Home / 877,037.20-1,315,555.80-315,998.80

Finding the Fourth Proportional to 877,037.20, 1,315,555.80 and 315,998.80

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Solution

The fourth proportional to 877,037.20, 1,315,555.80 and 315,998.80 is: 473,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,037.20 : 1,315,555.80 = 315,998.80 : x
  2. Step 2: Convert to fraction form
    877,037.20/1,315,555.80 = 315,998.80/x
  3. Step 3: Cross multiply
    877,037.20x = 1,315,555.80 × 315,998.80
  4. Step 4: Simplify right side
    877,037.20x = 415,714,054,133.04
  5. Step 5: Solve for x
    x = 415,714,054,133.04/877,037.20
  6. Step 6: Final answer
    x = 473,998.20

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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.