Home / 905,679.40-1,249,867.50-497,795.80

Finding the Fourth Proportional to 905,679.40, 1,249,867.50 and 497,795.80

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Solution

The fourth proportional to 905,679.40, 1,249,867.50 and 497,795.80 is: 686,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,679.40 : 1,249,867.50 = 497,795.80 : x
  2. Step 2: Convert to fraction form
    905,679.40/1,249,867.50 = 497,795.80/x
  3. Step 3: Cross multiply
    905,679.40x = 1,249,867.50 × 497,795.80
  4. Step 4: Simplify right side
    905,679.40x = 622,178,792,056.50
  5. Step 5: Solve for x
    x = 622,178,792,056.50/905,679.40
  6. Step 6: Final answer
    x = 686,974.65

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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.