Home / 705,688.81-973,780.32-399,704.29

Finding the Fourth Proportional to 705,688.81, 973,780.32 and 399,704.29

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Solution

The fourth proportional to 705,688.81, 973,780.32 and 399,704.29 is: 551,552.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,688.81 : 973,780.32 = 399,704.29 : x
  2. Step 2: Convert to fraction form
    705,688.81/973,780.32 = 399,704.29/x
  3. Step 3: Cross multiply
    705,688.81x = 973,780.32 × 399,704.29
  4. Step 4: Simplify right side
    705,688.81x = 389,224,171,421.57
  5. Step 5: Solve for x
    x = 389,224,171,421.57/705,688.81
  6. Step 6: Final answer
    x = 551,552.14

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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.