Home / 918,209.10-1,377,313.65-638,273.10

Finding the Fourth Proportional to 918,209.10, 1,377,313.65 and 638,273.10

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Solution

The fourth proportional to 918,209.10, 1,377,313.65 and 638,273.10 is: 957,409.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,209.10 : 1,377,313.65 = 638,273.10 : x
  2. Step 2: Convert to fraction form
    918,209.10/1,377,313.65 = 638,273.10/x
  3. Step 3: Cross multiply
    918,209.10x = 1,377,313.65 × 638,273.10
  4. Step 4: Simplify right side
    918,209.10x = 879,102,253,057.82
  5. Step 5: Solve for x
    x = 879,102,253,057.82/918,209.10
  6. Step 6: Final answer
    x = 957,409.65

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Double scale
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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.