Home / 874,477.60-1,311,716.40-402,085.60

Finding the Fourth Proportional to 874,477.60, 1,311,716.40 and 402,085.60

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Solution

The fourth proportional to 874,477.60, 1,311,716.40 and 402,085.60 is: 603,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,477.60 : 1,311,716.40 = 402,085.60 : x
  2. Step 2: Convert to fraction form
    874,477.60/1,311,716.40 = 402,085.60/x
  3. Step 3: Cross multiply
    874,477.60x = 1,311,716.40 × 402,085.60
  4. Step 4: Simplify right side
    874,477.60x = 527,422,275,723.84
  5. Step 5: Solve for x
    x = 527,422,275,723.84/874,477.60
  6. Step 6: Final answer
    x = 603,128.40

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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.