Home / 877,107.78-1,210,395.69-489,928.59

Finding the Fourth Proportional to 877,107.78, 1,210,395.69 and 489,928.59

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Solution

The fourth proportional to 877,107.78, 1,210,395.69 and 489,928.59 is: 676,094.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,107.78 : 1,210,395.69 = 489,928.59 : x
  2. Step 2: Convert to fraction form
    877,107.78/1,210,395.69 = 489,928.59/x
  3. Step 3: Cross multiply
    877,107.78x = 1,210,395.69 × 489,928.59
  4. Step 4: Simplify right side
    877,107.78x = 593,007,453,743.78
  5. Step 5: Solve for x
    x = 593,007,453,743.78/877,107.78
  6. Step 6: Final answer
    x = 676,094.17

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1.5x scale

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.