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Finding the Fourth Proportional to 581,661.60, 872,492.40 and 489,040.80

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Solution

The fourth proportional to 581,661.60, 872,492.40 and 489,040.80 is: 733,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,661.60 : 872,492.40 = 489,040.80 : x
  2. Step 2: Convert to fraction form
    581,661.60/872,492.40 = 489,040.80/x
  3. Step 3: Cross multiply
    581,661.60x = 872,492.40 × 489,040.80
  4. Step 4: Simplify right side
    581,661.60x = 426,684,381,289.92
  5. Step 5: Solve for x
    x = 426,684,381,289.92/581,661.60
  6. Step 6: Final answer
    x = 733,561.20

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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.