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Finding the Fourth Proportional to 489,701.80, 734,552.70 and 290,636.20

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Solution

The fourth proportional to 489,701.80, 734,552.70 and 290,636.20 is: 435,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,701.80 : 734,552.70 = 290,636.20 : x
  2. Step 2: Convert to fraction form
    489,701.80/734,552.70 = 290,636.20/x
  3. Step 3: Cross multiply
    489,701.80x = 734,552.70 × 290,636.20
  4. Step 4: Simplify right side
    489,701.80x = 213,487,605,427.74
  5. Step 5: Solve for x
    x = 213,487,605,427.74/489,701.80
  6. Step 6: Final answer
    x = 435,954.30

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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.