Home / 705,278.79-973,296.34-399,347.10

Finding the Fourth Proportional to 705,278.79, 973,296.34 and 399,347.10

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Solution

The fourth proportional to 705,278.79, 973,296.34 and 399,347.10 is: 551,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,278.79 : 973,296.34 = 399,347.10 : x
  2. Step 2: Convert to fraction form
    705,278.79/973,296.34 = 399,347.10/x
  3. Step 3: Cross multiply
    705,278.79x = 973,296.34 × 399,347.10
  4. Step 4: Simplify right side
    705,278.79x = 388,683,069,821.25
  5. Step 5: Solve for x
    x = 388,683,069,821.25/705,278.79
  6. Step 6: Final answer
    x = 551,105.57

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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.