Home / 905,662.16-1,249,826.70-497,801.72

Finding the Fourth Proportional to 905,662.16, 1,249,826.70 and 497,801.72

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Solution

The fourth proportional to 905,662.16, 1,249,826.70 and 497,801.72 is: 686,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,662.16 : 1,249,826.70 = 497,801.72 : x
  2. Step 2: Convert to fraction form
    905,662.16/1,249,826.70 = 497,801.72/x
  3. Step 3: Cross multiply
    905,662.16x = 1,249,826.70 × 497,801.72
  4. Step 4: Simplify right side
    905,662.16x = 622,165,880,961.92
  5. Step 5: Solve for x
    x = 622,165,880,961.92/905,662.16
  6. Step 6: Final answer
    x = 686,973.47

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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.