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Finding the Fourth Proportional to 612,152.38, 918,384.20 and 359,646.22

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Solution

The fourth proportional to 612,152.38, 918,384.20 and 359,646.22 is: 539,560.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,152.38 : 918,384.20 = 359,646.22 : x
  2. Step 2: Convert to fraction form
    612,152.38/918,384.20 = 359,646.22/x
  3. Step 3: Cross multiply
    612,152.38x = 918,384.20 × 359,646.22
  4. Step 4: Simplify right side
    612,152.38x = 330,293,406,037.72
  5. Step 5: Solve for x
    x = 330,293,406,037.72/612,152.38
  6. Step 6: Final answer
    x = 539,560.76

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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.