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Finding the Fourth Proportional to 528,669.98, 729,565.30 and 286,952.60

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Solution

The fourth proportional to 528,669.98, 729,565.30 and 286,952.60 is: 395,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,669.98 : 729,565.30 = 286,952.60 : x
  2. Step 2: Convert to fraction form
    528,669.98/729,565.30 = 286,952.60/x
  3. Step 3: Cross multiply
    528,669.98x = 729,565.30 × 286,952.60
  4. Step 4: Simplify right side
    528,669.98x = 209,350,659,704.78
  5. Step 5: Solve for x
    x = 209,350,659,704.78/528,669.98
  6. Step 6: Final answer
    x = 395,994.98

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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.