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Finding the Fourth Proportional to 611,492.87, 843,831.80 and 339,578.10

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Solution

The fourth proportional to 611,492.87, 843,831.80 and 339,578.10 is: 468,602.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,492.87 : 843,831.80 = 339,578.10 : x
  2. Step 2: Convert to fraction form
    611,492.87/843,831.80 = 339,578.10/x
  3. Step 3: Cross multiply
    611,492.87x = 843,831.80 × 339,578.10
  4. Step 4: Simplify right side
    611,492.87x = 286,546,799,363.58
  5. Step 5: Solve for x
    x = 286,546,799,363.58/611,492.87
  6. Step 6: Final answer
    x = 468,602.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.