Home / 389,427.20-584,140.80-365,807.60

Finding the Fourth Proportional to 389,427.20, 584,140.80 and 365,807.60

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Solution

The fourth proportional to 389,427.20, 584,140.80 and 365,807.60 is: 548,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,427.20 : 584,140.80 = 365,807.60 : x
  2. Step 2: Convert to fraction form
    389,427.20/584,140.80 = 365,807.60/x
  3. Step 3: Cross multiply
    389,427.20x = 584,140.80 × 365,807.60
  4. Step 4: Simplify right side
    389,427.20x = 213,683,144,110.08
  5. Step 5: Solve for x
    x = 213,683,144,110.08/389,427.20
  6. Step 6: Final answer
    x = 548,711.40

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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.