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Finding the Fourth Proportional to 489,220.10, 733,830.16 and 339,920.90

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Solution

The fourth proportional to 489,220.10, 733,830.16 and 339,920.90 is: 509,881.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,220.10 : 733,830.16 = 339,920.90 : x
  2. Step 2: Convert to fraction form
    489,220.10/733,830.16 = 339,920.90/x
  3. Step 3: Cross multiply
    489,220.10x = 733,830.16 × 339,920.90
  4. Step 4: Simplify right side
    489,220.10x = 249,444,208,434.34
  5. Step 5: Solve for x
    x = 249,444,208,434.34/489,220.10
  6. Step 6: Final answer
    x = 509,881.36

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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.