Home / 918,628.92-1,377,969.30-253,780.92

Finding the Fourth Proportional to 918,628.92, 1,377,969.30 and 253,780.92

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Solution

The fourth proportional to 918,628.92, 1,377,969.30 and 253,780.92 is: 380,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,628.92 : 1,377,969.30 = 253,780.92 : x
  2. Step 2: Convert to fraction form
    918,628.92/1,377,969.30 = 253,780.92/x
  3. Step 3: Cross multiply
    918,628.92x = 1,377,969.30 × 253,780.92
  4. Step 4: Simplify right side
    918,628.92x = 349,702,316,685.76
  5. Step 5: Solve for x
    x = 349,702,316,685.76/918,628.92
  6. Step 6: Final answer
    x = 380,678.54

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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.