Home / 905,728.80-1,249,918.58-497,868.35

Finding the Fourth Proportional to 905,728.80, 1,249,918.58 and 497,868.35

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Solution

The fourth proportional to 905,728.80, 1,249,918.58 and 497,868.35 is: 687,065.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,728.80 : 1,249,918.58 = 497,868.35 : x
  2. Step 2: Convert to fraction form
    905,728.80/1,249,918.58 = 497,868.35/x
  3. Step 3: Cross multiply
    905,728.80x = 1,249,918.58 × 497,868.35
  4. Step 4: Simplify right side
    905,728.80x = 622,294,898,569.60
  5. Step 5: Solve for x
    x = 622,294,898,569.60/905,728.80
  6. Step 6: Final answer
    x = 687,065.38

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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.