Home / 431,365,639.60-647,048,459.40-201,357,974.80

Finding the Fourth Proportional to 431,365,639.60, 647,048,459.40 and 201,357,974.80

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Solution

The fourth proportional to 431,365,639.60, 647,048,459.40 and 201,357,974.80 is: 302,036,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,365,639.60 : 647,048,459.40 = 201,357,974.80 : x
  2. Step 2: Convert to fraction form
    431,365,639.60/647,048,459.40 = 201,357,974.80/x
  3. Step 3: Cross multiply
    431,365,639.60x = 647,048,459.40 × 201,357,974.80
  4. Step 4: Simplify right side
    431,365,639.60x = 130,288,367,382,244,032
  5. Step 5: Solve for x
    x = 130,288,367,382,244,032/431,365,639.60
  6. Step 6: Final answer
    x = 302,036,962.20

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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.