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Finding the Fourth Proportional to 1,383,513, 1,909,277.10 and 779,901

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Solution

The fourth proportional to 1,383,513, 1,909,277.10 and 779,901 is: 1,076,279.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,513 : 1,909,277.10 = 779,901 : x
  2. Step 2: Convert to fraction form
    1,383,513/1,909,277.10 = 779,901/x
  3. Step 3: Cross multiply
    1,383,513x = 1,909,277.10 × 779,901
  4. Step 4: Simplify right side
    1,383,513x = 1,489,047,119,567.10
  5. Step 5: Solve for x
    x = 1,489,047,119,567.10/1,383,513
  6. Step 6: Final answer
    x = 1,076,279.82

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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.