Home / 1,119,130.47-1,678,862.34-399,416.31

Finding the Fourth Proportional to 1,119,130.47, 1,678,862.34 and 399,416.31

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Solution

The fourth proportional to 1,119,130.47, 1,678,862.34 and 399,416.31 is: 599,183.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,130.47 : 1,678,862.34 = 399,416.31 : x
  2. Step 2: Convert to fraction form
    1,119,130.47/1,678,862.34 = 399,416.31/x
  3. Step 3: Cross multiply
    1,119,130.47x = 1,678,862.34 × 399,416.31
  4. Step 4: Simplify right side
    1,119,130.47x = 670,565,000,840.77
  5. Step 5: Solve for x
    x = 670,565,000,840.77/1,119,130.47
  6. Step 6: Final answer
    x = 599,183.94

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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.