Home / 1,385,440.65-2,074,661.78-909,549.45

Finding the Fourth Proportional to 1,385,440.65, 2,074,661.78 and 909,549.45

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Solution

The fourth proportional to 1,385,440.65, 2,074,661.78 and 909,549.45 is: 1,362,026.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,440.65 : 2,074,661.78 = 909,549.45 : x
  2. Step 2: Convert to fraction form
    1,385,440.65/2,074,661.78 = 909,549.45/x
  3. Step 3: Cross multiply
    1,385,440.65x = 2,074,661.78 × 909,549.45
  4. Step 4: Simplify right side
    1,385,440.65x = 1,887,007,476,387.27
  5. Step 5: Solve for x
    x = 1,887,007,476,387.27/1,385,440.65
  6. Step 6: Final answer
    x = 1,362,026.93

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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.