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Finding the Fourth Proportional to 528,323.66, 792,482.76 and 128,966.54

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Solution

The fourth proportional to 528,323.66, 792,482.76 and 128,966.54 is: 193,449.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,323.66 : 792,482.76 = 128,966.54 : x
  2. Step 2: Convert to fraction form
    528,323.66/792,482.76 = 128,966.54/x
  3. Step 3: Cross multiply
    528,323.66x = 792,482.76 × 128,966.54
  4. Step 4: Simplify right side
    528,323.66x = 102,203,759,566.85
  5. Step 5: Solve for x
    x = 102,203,759,566.85/528,323.66
  6. Step 6: Final answer
    x = 193,449.14

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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.