Home / 438,621,420.80-657,932,131.20-369,746,667.20

Finding the Fourth Proportional to 438,621,420.80, 657,932,131.20 and 369,746,667.20

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Solution

The fourth proportional to 438,621,420.80, 657,932,131.20 and 369,746,667.20 is: 554,620,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,621,420.80 : 657,932,131.20 = 369,746,667.20 : x
  2. Step 2: Convert to fraction form
    438,621,420.80/657,932,131.20 = 369,746,667.20/x
  3. Step 3: Cross multiply
    438,621,420.80x = 657,932,131.20 × 369,746,667.20
  4. Step 4: Simplify right side
    438,621,420.80x = 243,268,212,754,993,152
  5. Step 5: Solve for x
    x = 243,268,212,754,993,152/438,621,420.80
  6. Step 6: Final answer
    x = 554,620,000.80

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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.