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Finding the Fourth Proportional to 612,090.40, 918,135.60 and 499,897.30

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Solution

The fourth proportional to 612,090.40, 918,135.60 and 499,897.30 is: 749,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,090.40 : 918,135.60 = 499,897.30 : x
  2. Step 2: Convert to fraction form
    612,090.40/918,135.60 = 499,897.30/x
  3. Step 3: Cross multiply
    612,090.40x = 918,135.60 × 499,897.30
  4. Step 4: Simplify right side
    612,090.40x = 458,973,507,473.88
  5. Step 5: Solve for x
    x = 458,973,507,473.88/612,090.40
  6. Step 6: Final answer
    x = 749,845.95

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Similar ratio
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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.