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Finding the Fourth Proportional to 706,762.50, 975,332.25 and 388,810.50

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Solution

The fourth proportional to 706,762.50, 975,332.25 and 388,810.50 is: 536,558.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    706,762.50 : 975,332.25 = 388,810.50 : x
  2. Step 2: Convert to fraction form
    706,762.50/975,332.25 = 388,810.50/x
  3. Step 3: Cross multiply
    706,762.50x = 975,332.25 × 388,810.50
  4. Step 4: Simplify right side
    706,762.50x = 379,219,419,788.63
  5. Step 5: Solve for x
    x = 379,219,419,788.63/706,762.50
  6. Step 6: Final answer
    x = 536,558.49

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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.