Home / 918,650.16-1,377,886.12-278,959.42

Finding the Fourth Proportional to 918,650.16, 1,377,886.12 and 278,959.42

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Solution

The fourth proportional to 918,650.16, 1,377,886.12 and 278,959.42 is: 418,412.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,650.16 : 1,377,886.12 = 278,959.42 : x
  2. Step 2: Convert to fraction form
    918,650.16/1,377,886.12 = 278,959.42/x
  3. Step 3: Cross multiply
    918,650.16x = 1,377,886.12 × 278,959.42
  4. Step 4: Simplify right side
    918,650.16x = 384,374,312,861.25
  5. Step 5: Solve for x
    x = 384,374,312,861.25/918,650.16
  6. Step 6: Final answer
    x = 418,412.07

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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.