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Finding the Fourth Proportional to 1,560,510, 2,340,765 and 438,579

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Solution

The fourth proportional to 1,560,510, 2,340,765 and 438,579 is: 657,868.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560,510 : 2,340,765 = 438,579 : x
  2. Step 2: Convert to fraction form
    1,560,510/2,340,765 = 438,579/x
  3. Step 3: Cross multiply
    1,560,510x = 2,340,765 × 438,579
  4. Step 4: Simplify right side
    1,560,510x = 1,026,610,372,935
  5. Step 5: Solve for x
    x = 1,026,610,372,935/1,560,510
  6. Step 6: Final answer
    x = 657,868.50

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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.