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Finding the Fourth Proportional to 489,043.60, 733,565.40 and 339,744.40

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Solution

The fourth proportional to 489,043.60, 733,565.40 and 339,744.40 is: 509,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,043.60 : 733,565.40 = 339,744.40 : x
  2. Step 2: Convert to fraction form
    489,043.60/733,565.40 = 339,744.40/x
  3. Step 3: Cross multiply
    489,043.60x = 733,565.40 × 339,744.40
  4. Step 4: Simplify right side
    489,043.60x = 249,224,736,683.76
  5. Step 5: Solve for x
    x = 249,224,736,683.76/489,043.60
  6. Step 6: Final answer
    x = 509,616.60

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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.