Home / 431,365,637.60-647,048,456.40-201,357,972.80

Finding the Fourth Proportional to 431,365,637.60, 647,048,456.40 and 201,357,972.80

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Solution

The fourth proportional to 431,365,637.60, 647,048,456.40 and 201,357,972.80 is: 302,036,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,365,637.60 : 647,048,456.40 = 201,357,972.80 : x
  2. Step 2: Convert to fraction form
    431,365,637.60/647,048,456.40 = 201,357,972.80/x
  3. Step 3: Cross multiply
    431,365,637.60x = 647,048,456.40 × 201,357,972.80
  4. Step 4: Simplify right side
    431,365,637.60x = 130,288,365,484,073,184
  5. Step 5: Solve for x
    x = 130,288,365,484,073,184/431,365,637.60
  6. Step 6: Final answer
    x = 302,036,959.20

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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.