Home / 918,688.20-1,377,935.10-287,568.60

Finding the Fourth Proportional to 918,688.20, 1,377,935.10 and 287,568.60

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Solution

The fourth proportional to 918,688.20, 1,377,935.10 and 287,568.60 is: 431,322.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,688.20 : 1,377,935.10 = 287,568.60 : x
  2. Step 2: Convert to fraction form
    918,688.20/1,377,935.10 = 287,568.60/x
  3. Step 3: Cross multiply
    918,688.20x = 1,377,935.10 × 287,568.60
  4. Step 4: Simplify right side
    918,688.20x = 396,250,867,597.86
  5. Step 5: Solve for x
    x = 396,250,867,597.86/918,688.20
  6. Step 6: Final answer
    x = 431,322.47

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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.