Home / 385,324.60-577,986.90-320,006.20

Finding the Fourth Proportional to 385,324.60, 577,986.90 and 320,006.20

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Solution

The fourth proportional to 385,324.60, 577,986.90 and 320,006.20 is: 480,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,324.60 : 577,986.90 = 320,006.20 : x
  2. Step 2: Convert to fraction form
    385,324.60/577,986.90 = 320,006.20/x
  3. Step 3: Cross multiply
    385,324.60x = 577,986.90 × 320,006.20
  4. Step 4: Simplify right side
    385,324.60x = 184,959,391,518.78
  5. Step 5: Solve for x
    x = 184,959,391,518.78/385,324.60
  6. Step 6: Final answer
    x = 480,009.30

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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.