Home / 1,287,032.40-1,929,965.40-488,048.40

Finding the Fourth Proportional to 1,287,032.40, 1,929,965.40 and 488,048.40

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Solution

The fourth proportional to 1,287,032.40, 1,929,965.40 and 488,048.40 is: 731,851.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,032.40 : 1,929,965.40 = 488,048.40 : x
  2. Step 2: Convert to fraction form
    1,287,032.40/1,929,965.40 = 488,048.40/x
  3. Step 3: Cross multiply
    1,287,032.40x = 1,929,965.40 × 488,048.40
  4. Step 4: Simplify right side
    1,287,032.40x = 941,916,525,525.36
  5. Step 5: Solve for x
    x = 941,916,525,525.36/1,287,032.40
  6. Step 6: Final answer
    x = 731,851.45

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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.