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Finding the Fourth Proportional to 389,460.20, 546,031.60 and 389,460.20

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Solution

The fourth proportional to 389,460.20, 546,031.60 and 389,460.20 is: 546,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,460.20 : 546,031.60 = 389,460.20 : x
  2. Step 2: Convert to fraction form
    389,460.20/546,031.60 = 389,460.20/x
  3. Step 3: Cross multiply
    389,460.20x = 546,031.60 × 389,460.20
  4. Step 4: Simplify right side
    389,460.20x = 212,657,576,142.32
  5. Step 5: Solve for x
    x = 212,657,576,142.32/389,460.20
  6. Step 6: Final answer
    x = 546,031.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.