Home / 710,721.80-1,066,082.70-289,768.20

Finding the Fourth Proportional to 710,721.80, 1,066,082.70 and 289,768.20

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Solution

The fourth proportional to 710,721.80, 1,066,082.70 and 289,768.20 is: 434,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,721.80 : 1,066,082.70 = 289,768.20 : x
  2. Step 2: Convert to fraction form
    710,721.80/1,066,082.70 = 289,768.20/x
  3. Step 3: Cross multiply
    710,721.80x = 1,066,082.70 × 289,768.20
  4. Step 4: Simplify right side
    710,721.80x = 308,916,865,030.14
  5. Step 5: Solve for x
    x = 308,916,865,030.14/710,721.80
  6. Step 6: Final answer
    x = 434,652.30

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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.