Home / 1,147,140.30-1,720,710.45-399,186.30

Finding the Fourth Proportional to 1,147,140.30, 1,720,710.45 and 399,186.30

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Solution

The fourth proportional to 1,147,140.30, 1,720,710.45 and 399,186.30 is: 598,779.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,140.30 : 1,720,710.45 = 399,186.30 : x
  2. Step 2: Convert to fraction form
    1,147,140.30/1,720,710.45 = 399,186.30/x
  3. Step 3: Cross multiply
    1,147,140.30x = 1,720,710.45 × 399,186.30
  4. Step 4: Simplify right side
    1,147,140.30x = 686,884,037,906.84
  5. Step 5: Solve for x
    x = 686,884,037,906.84/1,147,140.30
  6. Step 6: Final answer
    x = 598,779.45

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Half scale
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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.