Home / 1,152,406.68-1,590,411.24-643,185.60

Finding the Fourth Proportional to 1,152,406.68, 1,590,411.24 and 643,185.60

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Solution

The fourth proportional to 1,152,406.68, 1,590,411.24 and 643,185.60 is: 887,646.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,406.68 : 1,590,411.24 = 643,185.60 : x
  2. Step 2: Convert to fraction form
    1,152,406.68/1,590,411.24 = 643,185.60/x
  3. Step 3: Cross multiply
    1,152,406.68x = 1,590,411.24 × 643,185.60
  4. Step 4: Simplify right side
    1,152,406.68x = 1,022,929,607,646.14
  5. Step 5: Solve for x
    x = 1,022,929,607,646.14/1,152,406.68
  6. Step 6: Final answer
    x = 887,646.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.