Home / 431,118,455.40-646,677,683.10-212,873,351.40

Finding the Fourth Proportional to 431,118,455.40, 646,677,683.10 and 212,873,351.40

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Solution

The fourth proportional to 431,118,455.40, 646,677,683.10 and 212,873,351.40 is: 319,310,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,118,455.40 : 646,677,683.10 = 212,873,351.40 : x
  2. Step 2: Convert to fraction form
    431,118,455.40/646,677,683.10 = 212,873,351.40/x
  3. Step 3: Cross multiply
    431,118,455.40x = 646,677,683.10 × 212,873,351.40
  4. Step 4: Simplify right side
    431,118,455.40x = 137,660,445,677,084,144
  5. Step 5: Solve for x
    x = 137,660,445,677,084,144/431,118,455.40
  6. Step 6: Final answer
    x = 319,310,027.10

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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.