Home / 920,923.61-1,381,692.85-408,518.06

Finding the Fourth Proportional to 920,923.61, 1,381,692.85 and 408,518.06

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Solution

The fourth proportional to 920,923.61, 1,381,692.85 and 408,518.06 is: 612,913.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,923.61 : 1,381,692.85 = 408,518.06 : x
  2. Step 2: Convert to fraction form
    920,923.61/1,381,692.85 = 408,518.06/x
  3. Step 3: Cross multiply
    920,923.61x = 1,381,692.85 × 408,518.06
  4. Step 4: Simplify right side
    920,923.61x = 564,446,474,668.11
  5. Step 5: Solve for x
    x = 564,446,474,668.11/920,923.61
  6. Step 6: Final answer
    x = 612,913.46

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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.