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Finding the Fourth Proportional to 1,069,483, 1,475,886.54 and 639,781.24

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Solution

The fourth proportional to 1,069,483, 1,475,886.54 and 639,781.24 is: 882,898.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,483 : 1,475,886.54 = 639,781.24 : x
  2. Step 2: Convert to fraction form
    1,069,483/1,475,886.54 = 639,781.24/x
  3. Step 3: Cross multiply
    1,069,483x = 1,475,886.54 × 639,781.24
  4. Step 4: Simplify right side
    1,069,483x = 944,244,520,660.51
  5. Step 5: Solve for x
    x = 944,244,520,660.51/1,069,483
  6. Step 6: Final answer
    x = 882,898.11

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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.