Home / 385,329.60-577,994.40-320,011.20

Finding the Fourth Proportional to 385,329.60, 577,994.40 and 320,011.20

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Solution

The fourth proportional to 385,329.60, 577,994.40 and 320,011.20 is: 480,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,329.60 : 577,994.40 = 320,011.20 : x
  2. Step 2: Convert to fraction form
    385,329.60/577,994.40 = 320,011.20/x
  3. Step 3: Cross multiply
    385,329.60x = 577,994.40 × 320,011.20
  4. Step 4: Simplify right side
    385,329.60x = 184,964,681,537.28
  5. Step 5: Solve for x
    x = 184,964,681,537.28/385,329.60
  6. Step 6: Final answer
    x = 480,016.80

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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.