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Finding the Fourth Proportional to 612,001.64, 918,158.19 and 359,495.69

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Solution

The fourth proportional to 612,001.64, 918,158.19 and 359,495.69 is: 539,335.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,001.64 : 918,158.19 = 359,495.69 : x
  2. Step 2: Convert to fraction form
    612,001.64/918,158.19 = 359,495.69/x
  3. Step 3: Cross multiply
    612,001.64x = 918,158.19 × 359,495.69
  4. Step 4: Simplify right side
    612,001.64x = 330,073,912,043.20
  5. Step 5: Solve for x
    x = 330,073,912,043.20/612,001.64
  6. Step 6: Final answer
    x = 539,335.01

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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.