Home / 1,287,008.40-1,929,929.40-488,024.40

Finding the Fourth Proportional to 1,287,008.40, 1,929,929.40 and 488,024.40

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Solution

The fourth proportional to 1,287,008.40, 1,929,929.40 and 488,024.40 is: 731,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,008.40 : 1,929,929.40 = 488,024.40 : x
  2. Step 2: Convert to fraction form
    1,287,008.40/1,929,929.40 = 488,024.40/x
  3. Step 3: Cross multiply
    1,287,008.40x = 1,929,929.40 × 488,024.40
  4. Step 4: Simplify right side
    1,287,008.40x = 941,852,637,477.36
  5. Step 5: Solve for x
    x = 941,852,637,477.36/1,287,008.40
  6. Step 6: Final answer
    x = 731,815.45

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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.