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Finding the Fourth Proportional to 489,390.20, 734,085.30 and 489,390.20

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Solution

The fourth proportional to 489,390.20, 734,085.30 and 489,390.20 is: 734,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,390.20 : 734,085.30 = 489,390.20 : x
  2. Step 2: Convert to fraction form
    489,390.20/734,085.30 = 489,390.20/x
  3. Step 3: Cross multiply
    489,390.20x = 734,085.30 × 489,390.20
  4. Step 4: Simplify right side
    489,390.20x = 359,254,151,784.06
  5. Step 5: Solve for x
    x = 359,254,151,784.06/489,390.20
  6. Step 6: Final answer
    x = 734,085.30

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Similar ratio
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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.