Home / 710,723.80-1,066,085.70-289,770.20

Finding the Fourth Proportional to 710,723.80, 1,066,085.70 and 289,770.20

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Solution

The fourth proportional to 710,723.80, 1,066,085.70 and 289,770.20 is: 434,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,723.80 : 1,066,085.70 = 289,770.20 : x
  2. Step 2: Convert to fraction form
    710,723.80/1,066,085.70 = 289,770.20/x
  3. Step 3: Cross multiply
    710,723.80x = 1,066,085.70 × 289,770.20
  4. Step 4: Simplify right side
    710,723.80x = 308,919,866,506.14
  5. Step 5: Solve for x
    x = 308,919,866,506.14/710,723.80
  6. Step 6: Final answer
    x = 434,655.30

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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.