Home / 920,805.80-1,381,208.70-471,377.30

Finding the Fourth Proportional to 920,805.80, 1,381,208.70 and 471,377.30

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Solution

The fourth proportional to 920,805.80, 1,381,208.70 and 471,377.30 is: 707,065.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,805.80 : 1,381,208.70 = 471,377.30 : x
  2. Step 2: Convert to fraction form
    920,805.80/1,381,208.70 = 471,377.30/x
  3. Step 3: Cross multiply
    920,805.80x = 1,381,208.70 × 471,377.30
  4. Step 4: Simplify right side
    920,805.80x = 651,070,427,742.51
  5. Step 5: Solve for x
    x = 651,070,427,742.51/920,805.80
  6. Step 6: Final answer
    x = 707,065.95

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Double scale
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Similar ratio
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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.