Home / 401,338,429.20-602,007,643.80-320,716,861.20

Finding the Fourth Proportional to 401,338,429.20, 602,007,643.80 and 320,716,861.20

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Solution

The fourth proportional to 401,338,429.20, 602,007,643.80 and 320,716,861.20 is: 481,075,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,338,429.20 : 602,007,643.80 = 320,716,861.20 : x
  2. Step 2: Convert to fraction form
    401,338,429.20/602,007,643.80 = 320,716,861.20/x
  3. Step 3: Cross multiply
    401,338,429.20x = 602,007,643.80 × 320,716,861.20
  4. Step 4: Simplify right side
    401,338,429.20x = 193,074,001,937,943,616
  5. Step 5: Solve for x
    x = 193,074,001,937,943,616/401,338,429.20
  6. Step 6: Final answer
    x = 481,075,291.80

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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.