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Finding the Fourth Proportional to 489,346.80, 734,020.20 and 453,917.40

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Solution

The fourth proportional to 489,346.80, 734,020.20 and 453,917.40 is: 680,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,346.80 : 734,020.20 = 453,917.40 : x
  2. Step 2: Convert to fraction form
    489,346.80/734,020.20 = 453,917.40/x
  3. Step 3: Cross multiply
    489,346.80x = 734,020.20 × 453,917.40
  4. Step 4: Simplify right side
    489,346.80x = 333,184,540,731.48
  5. Step 5: Solve for x
    x = 333,184,540,731.48/489,346.80
  6. Step 6: Final answer
    x = 680,876.10

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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.