Home / 918,864.76-1,378,296.32-287,827.80

Finding the Fourth Proportional to 918,864.76, 1,378,296.32 and 287,827.80

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Solution

The fourth proportional to 918,864.76, 1,378,296.32 and 287,827.80 is: 431,741.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,864.76 : 1,378,296.32 = 287,827.80 : x
  2. Step 2: Convert to fraction form
    918,864.76/1,378,296.32 = 287,827.80/x
  3. Step 3: Cross multiply
    918,864.76x = 1,378,296.32 × 287,827.80
  4. Step 4: Simplify right side
    918,864.76x = 396,711,997,533.70
  5. Step 5: Solve for x
    x = 396,711,997,533.70/918,864.76
  6. Step 6: Final answer
    x = 431,741.44

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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.