Home / 389,327.60-583,991.40-386,703.20

Finding the Fourth Proportional to 389,327.60, 583,991.40 and 386,703.20

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Solution

The fourth proportional to 389,327.60, 583,991.40 and 386,703.20 is: 580,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,327.60 : 583,991.40 = 386,703.20 : x
  2. Step 2: Convert to fraction form
    389,327.60/583,991.40 = 386,703.20/x
  3. Step 3: Cross multiply
    389,327.60x = 583,991.40 × 386,703.20
  4. Step 4: Simplify right side
    389,327.60x = 225,831,343,152.48
  5. Step 5: Solve for x
    x = 225,831,343,152.48/389,327.60
  6. Step 6: Final answer
    x = 580,054.80

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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.