Home / 918,705.46-1,267,780.35-505,238.67

Finding the Fourth Proportional to 918,705.46, 1,267,780.35 and 505,238.67

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Solution

The fourth proportional to 918,705.46, 1,267,780.35 and 505,238.67 is: 697,211.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,705.46 : 1,267,780.35 = 505,238.67 : x
  2. Step 2: Convert to fraction form
    918,705.46/1,267,780.35 = 505,238.67/x
  3. Step 3: Cross multiply
    918,705.46x = 1,267,780.35 × 505,238.67
  4. Step 4: Simplify right side
    918,705.46x = 640,531,659,780.78
  5. Step 5: Solve for x
    x = 640,531,659,780.78/918,705.46
  6. Step 6: Final answer
    x = 697,211.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.