Home / 612,057.10-918,085.65-328,621.90

Finding the Fourth Proportional to 612,057.10, 918,085.65 and 328,621.90

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Solution

The fourth proportional to 612,057.10, 918,085.65 and 328,621.90 is: 492,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,057.10 : 918,085.65 = 328,621.90 : x
  2. Step 2: Convert to fraction form
    612,057.10/918,085.65 = 328,621.90/x
  3. Step 3: Cross multiply
    612,057.10x = 918,085.65 × 328,621.90
  4. Step 4: Simplify right side
    612,057.10x = 301,703,050,665.74
  5. Step 5: Solve for x
    x = 301,703,050,665.74/612,057.10
  6. Step 6: Final answer
    x = 492,932.85

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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.