Home / 1,384,378.40-2,076,178.80-438,039.20

Finding the Fourth Proportional to 1,384,378.40, 2,076,178.80 and 438,039.20

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Solution

The fourth proportional to 1,384,378.40, 2,076,178.80 and 438,039.20 is: 656,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,378.40 : 2,076,178.80 = 438,039.20 : x
  2. Step 2: Convert to fraction form
    1,384,378.40/2,076,178.80 = 438,039.20/x
  3. Step 3: Cross multiply
    1,384,378.40x = 2,076,178.80 × 438,039.20
  4. Step 4: Simplify right side
    1,384,378.40x = 909,447,700,608.96
  5. Step 5: Solve for x
    x = 909,447,700,608.96/1,384,378.40
  6. Step 6: Final answer
    x = 656,935.78

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1.5x scale

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.