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Finding the Fourth Proportional to 578,244.80, 866,492.40 and 489,015.20

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Solution

The fourth proportional to 578,244.80, 866,492.40 and 489,015.20 is: 732,782.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,244.80 : 866,492.40 = 489,015.20 : x
  2. Step 2: Convert to fraction form
    578,244.80/866,492.40 = 489,015.20/x
  3. Step 3: Cross multiply
    578,244.80x = 866,492.40 × 489,015.20
  4. Step 4: Simplify right side
    578,244.80x = 423,727,954,284.48
  5. Step 5: Solve for x
    x = 423,727,954,284.48/578,244.80
  6. Step 6: Final answer
    x = 732,782.99

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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.