Home / 489,828.80-734,743.20-209,374.40

Finding the Fourth Proportional to 489,828.80, 734,743.20 and 209,374.40

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Solution

The fourth proportional to 489,828.80, 734,743.20 and 209,374.40 is: 314,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,828.80 : 734,743.20 = 209,374.40 : x
  2. Step 2: Convert to fraction form
    489,828.80/734,743.20 = 209,374.40/x
  3. Step 3: Cross multiply
    489,828.80x = 734,743.20 × 209,374.40
  4. Step 4: Simplify right side
    489,828.80x = 153,836,416,654.08
  5. Step 5: Solve for x
    x = 153,836,416,654.08/489,828.80
  6. Step 6: Final answer
    x = 314,061.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.