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Finding the Fourth Proportional to 707,066.50, 975,751.94 and 389,114.50

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Solution

The fourth proportional to 707,066.50, 975,751.94 and 389,114.50 is: 536,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,066.50 : 975,751.94 = 389,114.50 : x
  2. Step 2: Convert to fraction form
    707,066.50/975,751.94 = 389,114.50/x
  3. Step 3: Cross multiply
    707,066.50x = 975,751.94 × 389,114.50
  4. Step 4: Simplify right side
    707,066.50x = 379,679,228,257.13
  5. Step 5: Solve for x
    x = 379,679,228,257.13/707,066.50
  6. Step 6: Final answer
    x = 536,978.10

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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.