Home / 905,659.15-1,249,822.57-497,798.71

Finding the Fourth Proportional to 905,659.15, 1,249,822.57 and 497,798.71

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Solution

The fourth proportional to 905,659.15, 1,249,822.57 and 497,798.71 is: 686,969.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,659.15 : 1,249,822.57 = 497,798.71 : x
  2. Step 2: Convert to fraction form
    905,659.15/1,249,822.57 = 497,798.71/x
  3. Step 3: Cross multiply
    905,659.15x = 1,249,822.57 × 497,798.71
  4. Step 4: Simplify right side
    905,659.15x = 622,160,063,074.89
  5. Step 5: Solve for x
    x = 622,160,063,074.89/905,659.15
  6. Step 6: Final answer
    x = 686,969.33

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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.