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Finding the Fourth Proportional to 489,439.40, 734,159.10 and 322,017.80

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Solution

The fourth proportional to 489,439.40, 734,159.10 and 322,017.80 is: 483,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,439.40 : 734,159.10 = 322,017.80 : x
  2. Step 2: Convert to fraction form
    489,439.40/734,159.10 = 322,017.80/x
  3. Step 3: Cross multiply
    489,439.40x = 734,159.10 × 322,017.80
  4. Step 4: Simplify right side
    489,439.40x = 236,412,298,231.98
  5. Step 5: Solve for x
    x = 236,412,298,231.98/489,439.40
  6. Step 6: Final answer
    x = 483,026.70

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Similar ratio
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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.