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Finding the Fourth Proportional to 705,465.68, 973,555.46 and 399,605.56

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Solution

The fourth proportional to 705,465.68, 973,555.46 and 399,605.56 is: 551,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,465.68 : 973,555.46 = 399,605.56 : x
  2. Step 2: Convert to fraction form
    705,465.68/973,555.46 = 399,605.56/x
  3. Step 3: Cross multiply
    705,465.68x = 973,555.46 × 399,605.56
  4. Step 4: Simplify right side
    705,465.68x = 389,038,173,465.20
  5. Step 5: Solve for x
    x = 389,038,173,465.20/705,465.68
  6. Step 6: Final answer
    x = 551,462.94

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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.