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Finding the Fourth Proportional to 532,328.40, 798,719.40 and 279,802.80

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Solution

The fourth proportional to 532,328.40, 798,719.40 and 279,802.80 is: 419,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,328.40 : 798,719.40 = 279,802.80 : x
  2. Step 2: Convert to fraction form
    532,328.40/798,719.40 = 279,802.80/x
  3. Step 3: Cross multiply
    532,328.40x = 798,719.40 × 279,802.80
  4. Step 4: Simplify right side
    532,328.40x = 223,483,924,534.32
  5. Step 5: Solve for x
    x = 223,483,924,534.32/532,328.40
  6. Step 6: Final answer
    x = 419,823.41

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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.