Home / 697,105.80-1,045,658.70-655,115.40

Finding the Fourth Proportional to 697,105.80, 1,045,658.70 and 655,115.40

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Solution

The fourth proportional to 697,105.80, 1,045,658.70 and 655,115.40 is: 982,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,105.80 : 1,045,658.70 = 655,115.40 : x
  2. Step 2: Convert to fraction form
    697,105.80/1,045,658.70 = 655,115.40/x
  3. Step 3: Cross multiply
    697,105.80x = 1,045,658.70 × 655,115.40
  4. Step 4: Simplify right side
    697,105.80x = 685,027,117,513.98
  5. Step 5: Solve for x
    x = 685,027,117,513.98/697,105.80
  6. Step 6: Final answer
    x = 982,673.10

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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.