Home / 909,039.80-1,363,559.70-310,676.60

Finding the Fourth Proportional to 909,039.80, 1,363,559.70 and 310,676.60

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Solution

The fourth proportional to 909,039.80, 1,363,559.70 and 310,676.60 is: 466,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,039.80 : 1,363,559.70 = 310,676.60 : x
  2. Step 2: Convert to fraction form
    909,039.80/1,363,559.70 = 310,676.60/x
  3. Step 3: Cross multiply
    909,039.80x = 1,363,559.70 × 310,676.60
  4. Step 4: Simplify right side
    909,039.80x = 423,626,091,493.02
  5. Step 5: Solve for x
    x = 423,626,091,493.02/909,039.80
  6. Step 6: Final answer
    x = 466,014.90

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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.