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Finding the Fourth Proportional to 489,133.40, 733,700.10 and 445,830.80

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Solution

The fourth proportional to 489,133.40, 733,700.10 and 445,830.80 is: 668,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,133.40 : 733,700.10 = 445,830.80 : x
  2. Step 2: Convert to fraction form
    489,133.40/733,700.10 = 445,830.80/x
  3. Step 3: Cross multiply
    489,133.40x = 733,700.10 × 445,830.80
  4. Step 4: Simplify right side
    489,133.40x = 327,106,102,543.08
  5. Step 5: Solve for x
    x = 327,106,102,543.08/489,133.40
  6. Step 6: Final answer
    x = 668,746.20

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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.