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Finding the Fourth Proportional to 665,534.69, 918,437.88 and 363,728.69

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Solution

The fourth proportional to 665,534.69, 918,437.88 and 363,728.69 is: 501,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,534.69 : 918,437.88 = 363,728.69 : x
  2. Step 2: Convert to fraction form
    665,534.69/918,437.88 = 363,728.69/x
  3. Step 3: Cross multiply
    665,534.69x = 918,437.88 × 363,728.69
  4. Step 4: Simplify right side
    665,534.69x = 334,062,206,938.78
  5. Step 5: Solve for x
    x = 334,062,206,938.78/665,534.69
  6. Step 6: Final answer
    x = 501,945.60

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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.