Home / 871,743.06-1,203,036.21-489,762.18

Finding the Fourth Proportional to 871,743.06, 1,203,036.21 and 489,762.18

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Solution

The fourth proportional to 871,743.06, 1,203,036.21 and 489,762.18 is: 675,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,743.06 : 1,203,036.21 = 489,762.18 : x
  2. Step 2: Convert to fraction form
    871,743.06/1,203,036.21 = 489,762.18/x
  3. Step 3: Cross multiply
    871,743.06x = 1,203,036.21 × 489,762.18
  4. Step 4: Simplify right side
    871,743.06x = 589,201,636,828.54
  5. Step 5: Solve for x
    x = 589,201,636,828.54/871,743.06
  6. Step 6: Final answer
    x = 675,889.11

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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.