Home / 876,632.36-1,209,740.83-489,453.71

Finding the Fourth Proportional to 876,632.36, 1,209,740.83 and 489,453.71

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Solution

The fourth proportional to 876,632.36, 1,209,740.83 and 489,453.71 is: 675,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,632.36 : 1,209,740.83 = 489,453.71 : x
  2. Step 2: Convert to fraction form
    876,632.36/1,209,740.83 = 489,453.71/x
  3. Step 3: Cross multiply
    876,632.36x = 1,209,740.83 × 489,453.71
  4. Step 4: Simplify right side
    876,632.36x = 592,112,130,109.64
  5. Step 5: Solve for x
    x = 592,112,130,109.64/876,632.36
  6. Step 6: Final answer
    x = 675,439.51

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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.