Home / 1,308,985.20-1,963,477.80-422,521.20

Finding the Fourth Proportional to 1,308,985.20, 1,963,477.80 and 422,521.20

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Solution

The fourth proportional to 1,308,985.20, 1,963,477.80 and 422,521.20 is: 633,781.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,985.20 : 1,963,477.80 = 422,521.20 : x
  2. Step 2: Convert to fraction form
    1,308,985.20/1,963,477.80 = 422,521.20/x
  3. Step 3: Cross multiply
    1,308,985.20x = 1,963,477.80 × 422,521.20
  4. Step 4: Simplify right side
    1,308,985.20x = 829,610,996,229.36
  5. Step 5: Solve for x
    x = 829,610,996,229.36/1,308,985.20
  6. Step 6: Final answer
    x = 633,781.80

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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.