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Finding the Fourth Proportional to 528,047.70, 792,071.55 and 469,986.90

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Solution

The fourth proportional to 528,047.70, 792,071.55 and 469,986.90 is: 704,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,047.70 : 792,071.55 = 469,986.90 : x
  2. Step 2: Convert to fraction form
    528,047.70/792,071.55 = 469,986.90/x
  3. Step 3: Cross multiply
    528,047.70x = 792,071.55 × 469,986.90
  4. Step 4: Simplify right side
    528,047.70x = 372,263,252,362.70
  5. Step 5: Solve for x
    x = 372,263,252,362.70/528,047.70
  6. Step 6: Final answer
    x = 704,980.35

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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.