Home / 918,920.29-1,378,466.88-270,496.91

Finding the Fourth Proportional to 918,920.29, 1,378,466.88 and 270,496.91

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Solution

The fourth proportional to 918,920.29, 1,378,466.88 and 270,496.91 is: 405,770.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,920.29 : 1,378,466.88 = 270,496.91 : x
  2. Step 2: Convert to fraction form
    918,920.29/1,378,466.88 = 270,496.91/x
  3. Step 3: Cross multiply
    918,920.29x = 1,378,466.88 × 270,496.91
  4. Step 4: Simplify right side
    918,920.29x = 372,871,031,577.34
  5. Step 5: Solve for x
    x = 372,871,031,577.34/918,920.29
  6. Step 6: Final answer
    x = 405,770.81

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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.