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Finding the Fourth Proportional to 599,816.80, 898,688.40 and 389,346.40

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Solution

The fourth proportional to 599,816.80, 898,688.40 and 389,346.40 is: 583,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,816.80 : 898,688.40 = 389,346.40 : x
  2. Step 2: Convert to fraction form
    599,816.80/898,688.40 = 389,346.40/x
  3. Step 3: Cross multiply
    599,816.80x = 898,688.40 × 389,346.40
  4. Step 4: Simplify right side
    599,816.80x = 349,901,093,261.76
  5. Step 5: Solve for x
    x = 349,901,093,261.76/599,816.80
  6. Step 6: Final answer
    x = 583,346.60

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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.