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Finding the Fourth Proportional to 539,495.80, 809,243.70 and 340,041.40

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Solution

The fourth proportional to 539,495.80, 809,243.70 and 340,041.40 is: 510,062.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,495.80 : 809,243.70 = 340,041.40 : x
  2. Step 2: Convert to fraction form
    539,495.80/809,243.70 = 340,041.40/x
  3. Step 3: Cross multiply
    539,495.80x = 809,243.70 × 340,041.40
  4. Step 4: Simplify right side
    539,495.80x = 275,176,360,689.18
  5. Step 5: Solve for x
    x = 275,176,360,689.18/539,495.80
  6. Step 6: Final answer
    x = 510,062.10

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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.