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Finding the Fourth Proportional to 643,804.88, 888,440.52 and 357,325.52

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Solution

The fourth proportional to 643,804.88, 888,440.52 and 357,325.52 is: 493,103.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,804.88 : 888,440.52 = 357,325.52 : x
  2. Step 2: Convert to fraction form
    643,804.88/888,440.52 = 357,325.52/x
  3. Step 3: Cross multiply
    643,804.88x = 888,440.52 × 357,325.52
  4. Step 4: Simplify right side
    643,804.88x = 317,462,470,798.07
  5. Step 5: Solve for x
    x = 317,462,470,798.07/643,804.88
  6. Step 6: Final answer
    x = 493,103.55

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1.5x scale

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.