Home / 776,139.81-1,071,108.14-431,997.70

Finding the Fourth Proportional to 776,139.81, 1,071,108.14 and 431,997.70

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Solution

The fourth proportional to 776,139.81, 1,071,108.14 and 431,997.70 is: 596,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,139.81 : 1,071,108.14 = 431,997.70 : x
  2. Step 2: Convert to fraction form
    776,139.81/1,071,108.14 = 431,997.70/x
  3. Step 3: Cross multiply
    776,139.81x = 1,071,108.14 × 431,997.70
  4. Step 4: Simplify right side
    776,139.81x = 462,716,252,931.28
  5. Step 5: Solve for x
    x = 462,716,252,931.28/776,139.81
  6. Step 6: Final answer
    x = 596,176.42

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.