Home / 696,926.80-1,045,390.20-431,206.30

Finding the Fourth Proportional to 696,926.80, 1,045,390.20 and 431,206.30

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Solution

The fourth proportional to 696,926.80, 1,045,390.20 and 431,206.30 is: 646,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,926.80 : 1,045,390.20 = 431,206.30 : x
  2. Step 2: Convert to fraction form
    696,926.80/1,045,390.20 = 431,206.30/x
  3. Step 3: Cross multiply
    696,926.80x = 1,045,390.20 × 431,206.30
  4. Step 4: Simplify right side
    696,926.80x = 450,778,840,198.26
  5. Step 5: Solve for x
    x = 450,778,840,198.26/696,926.80
  6. Step 6: Final answer
    x = 646,809.45

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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.