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Finding the Fourth Proportional to 612,741.99, 918,152.55 and 387,626.88

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Solution

The fourth proportional to 612,741.99, 918,152.55 and 387,626.88 is: 580,832.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,741.99 : 918,152.55 = 387,626.88 : x
  2. Step 2: Convert to fraction form
    612,741.99/918,152.55 = 387,626.88/x
  3. Step 3: Cross multiply
    612,741.99x = 918,152.55 × 387,626.88
  4. Step 4: Simplify right side
    612,741.99x = 355,900,608,320.54
  5. Step 5: Solve for x
    x = 355,900,608,320.54/612,741.99
  6. Step 6: Final answer
    x = 580,832.74

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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.