Home / 780,197.14-1,076,367.93-489,639.15

Finding the Fourth Proportional to 780,197.14, 1,076,367.93 and 489,639.15

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Solution

The fourth proportional to 780,197.14, 1,076,367.93 and 489,639.15 is: 675,511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,197.14 : 1,076,367.93 = 489,639.15 : x
  2. Step 2: Convert to fraction form
    780,197.14/1,076,367.93 = 489,639.15/x
  3. Step 3: Cross multiply
    780,197.14x = 1,076,367.93 × 489,639.15
  4. Step 4: Simplify right side
    780,197.14x = 527,031,881,589.29
  5. Step 5: Solve for x
    x = 527,031,881,589.29/780,197.14
  6. Step 6: Final answer
    x = 675,511.17

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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.