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Finding the Fourth Proportional to 528,658.83, 729,550.02 and 286,941.50

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Solution

The fourth proportional to 528,658.83, 729,550.02 and 286,941.50 is: 395,979.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,658.83 : 729,550.02 = 286,941.50 : x
  2. Step 2: Convert to fraction form
    528,658.83/729,550.02 = 286,941.50/x
  3. Step 3: Cross multiply
    528,658.83x = 729,550.02 × 286,941.50
  4. Step 4: Simplify right side
    528,658.83x = 209,338,177,063.83
  5. Step 5: Solve for x
    x = 209,338,177,063.83/528,658.83
  6. Step 6: Final answer
    x = 395,979.72

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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.