Home / 389,905.40-584,858.10-384,656.60

Finding the Fourth Proportional to 389,905.40, 584,858.10 and 384,656.60

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Solution

The fourth proportional to 389,905.40, 584,858.10 and 384,656.60 is: 576,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,905.40 : 584,858.10 = 384,656.60 : x
  2. Step 2: Convert to fraction form
    389,905.40/584,858.10 = 384,656.60/x
  3. Step 3: Cross multiply
    389,905.40x = 584,858.10 × 384,656.60
  4. Step 4: Simplify right side
    389,905.40x = 224,969,528,228.46
  5. Step 5: Solve for x
    x = 224,969,528,228.46/389,905.40
  6. Step 6: Final answer
    x = 576,984.90

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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.