Home / 431,628,802.40-647,443,203.60-159,105,857.60

Finding the Fourth Proportional to 431,628,802.40, 647,443,203.60 and 159,105,857.60

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Solution

The fourth proportional to 431,628,802.40, 647,443,203.60 and 159,105,857.60 is: 238,658,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,628,802.40 : 647,443,203.60 = 159,105,857.60 : x
  2. Step 2: Convert to fraction form
    431,628,802.40/647,443,203.60 = 159,105,857.60/x
  3. Step 3: Cross multiply
    431,628,802.40x = 647,443,203.60 × 159,105,857.60
  4. Step 4: Simplify right side
    431,628,802.40x = 103,012,006,156,069,408
  5. Step 5: Solve for x
    x = 103,012,006,156,069,408/431,628,802.40
  6. Step 6: Final answer
    x = 238,658,786.40

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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.