Home / 1,678,009.95-2,315,544.60-989,523.89

Finding the Fourth Proportional to 1,678,009.95, 2,315,544.60 and 989,523.89

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Solution

The fourth proportional to 1,678,009.95, 2,315,544.60 and 989,523.89 is: 1,365,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,009.95 : 2,315,544.60 = 989,523.89 : x
  2. Step 2: Convert to fraction form
    1,678,009.95/2,315,544.60 = 989,523.89/x
  3. Step 3: Cross multiply
    1,678,009.95x = 2,315,544.60 × 989,523.89
  4. Step 4: Simplify right side
    1,678,009.95x = 2,291,286,700,060.49
  5. Step 5: Solve for x
    x = 2,291,286,700,060.49/1,678,009.95
  6. Step 6: Final answer
    x = 1,365,478.61

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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.