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Finding the Fourth Proportional to 612,148.05, 918,222.08 and 363,316.05

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Solution

The fourth proportional to 612,148.05, 918,222.08 and 363,316.05 is: 544,974.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,148.05 : 918,222.08 = 363,316.05 : x
  2. Step 2: Convert to fraction form
    612,148.05/918,222.08 = 363,316.05/x
  3. Step 3: Cross multiply
    612,148.05x = 918,222.08 × 363,316.05
  4. Step 4: Simplify right side
    612,148.05x = 333,604,817,311.80
  5. Step 5: Solve for x
    x = 333,604,817,311.80/612,148.05
  6. Step 6: Final answer
    x = 544,974.08

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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.