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Finding the Fourth Proportional to 1,069,462, 1,475,857.56 and 639,760.24

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Solution

The fourth proportional to 1,069,462, 1,475,857.56 and 639,760.24 is: 882,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,462 : 1,475,857.56 = 639,760.24 : x
  2. Step 2: Convert to fraction form
    1,069,462/1,475,857.56 = 639,760.24/x
  3. Step 3: Cross multiply
    1,069,462x = 1,475,857.56 × 639,760.24
  4. Step 4: Simplify right side
    1,069,462x = 944,194,986,791.41
  5. Step 5: Solve for x
    x = 944,194,986,791.41/1,069,462
  6. Step 6: Final answer
    x = 882,869.13

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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.