Home / 438,621,415.80-657,932,123.70-369,746,662.20

Finding the Fourth Proportional to 438,621,415.80, 657,932,123.70 and 369,746,662.20

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Solution

The fourth proportional to 438,621,415.80, 657,932,123.70 and 369,746,662.20 is: 554,619,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,621,415.80 : 657,932,123.70 = 369,746,662.20 : x
  2. Step 2: Convert to fraction form
    438,621,415.80/657,932,123.70 = 369,746,662.20/x
  3. Step 3: Cross multiply
    438,621,415.80x = 657,932,123.70 × 369,746,662.20
  4. Step 4: Simplify right side
    438,621,415.80x = 243,268,206,692,232,512
  5. Step 5: Solve for x
    x = 243,268,206,692,232,512/438,621,415.80
  6. Step 6: Final answer
    x = 554,619,993.30

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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.