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Finding the Fourth Proportional to 9,980,605.20, 14,970,907.80 and 7,252,541.40

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Solution

The fourth proportional to 9,980,605.20, 14,970,907.80 and 7,252,541.40 is: 10,878,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,980,605.20 : 14,970,907.80 = 7,252,541.40 : x
  2. Step 2: Convert to fraction form
    9,980,605.20/14,970,907.80 = 7,252,541.40/x
  3. Step 3: Cross multiply
    9,980,605.20x = 14,970,907.80 × 7,252,541.40
  4. Step 4: Simplify right side
    9,980,605.20x = 108,577,128,615,082.94
  5. Step 5: Solve for x
    x = 108,577,128,615,082.94/9,980,605.20
  6. Step 6: Final answer
    x = 10,878,812.10

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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.