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Finding the Fourth Proportional to 905,664.54, 1,249,830 and 497,804.08

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Solution

The fourth proportional to 905,664.54, 1,249,830 and 497,804.08 is: 686,976.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,664.54 : 1,249,830 = 497,804.08 : x
  2. Step 2: Convert to fraction form
    905,664.54/1,249,830 = 497,804.08/x
  3. Step 3: Cross multiply
    905,664.54x = 1,249,830 × 497,804.08
  4. Step 4: Simplify right side
    905,664.54x = 622,170,473,306.40
  5. Step 5: Solve for x
    x = 622,170,473,306.40/905,664.54
  6. Step 6: Final answer
    x = 686,976.74

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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.