Home / 1,509,129.60-2,082,567.60-820,815.12

Finding the Fourth Proportional to 1,509,129.60, 2,082,567.60 and 820,815.12

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Solution

The fourth proportional to 1,509,129.60, 2,082,567.60 and 820,815.12 is: 1,132,707.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509,129.60 : 2,082,567.60 = 820,815.12 : x
  2. Step 2: Convert to fraction form
    1,509,129.60/2,082,567.60 = 820,815.12/x
  3. Step 3: Cross multiply
    1,509,129.60x = 2,082,567.60 × 820,815.12
  4. Step 4: Simplify right side
    1,509,129.60x = 1,709,402,974,502.11
  5. Step 5: Solve for x
    x = 1,709,402,974,502.11/1,509,129.60
  6. Step 6: Final answer
    x = 1,132,707.87

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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.