Home / 1,040,007.60-1,560,011.40-921,812.40

Finding the Fourth Proportional to 1,040,007.60, 1,560,011.40 and 921,812.40

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Solution

The fourth proportional to 1,040,007.60, 1,560,011.40 and 921,812.40 is: 1,382,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,040,007.60 : 1,560,011.40 = 921,812.40 : x
  2. Step 2: Convert to fraction form
    1,040,007.60/1,560,011.40 = 921,812.40/x
  3. Step 3: Cross multiply
    1,040,007.60x = 1,560,011.40 × 921,812.40
  4. Step 4: Simplify right side
    1,040,007.60x = 1,438,037,852,661.36
  5. Step 5: Solve for x
    x = 1,438,037,852,661.36/1,040,007.60
  6. Step 6: Final answer
    x = 1,382,718.60

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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.