Home / 705,428.79-973,498.87-383,145.18

Finding the Fourth Proportional to 705,428.79, 973,498.87 and 383,145.18

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Solution

The fourth proportional to 705,428.79, 973,498.87 and 383,145.18 is: 528,744.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,428.79 : 973,498.87 = 383,145.18 : x
  2. Step 2: Convert to fraction form
    705,428.79/973,498.87 = 383,145.18/x
  3. Step 3: Cross multiply
    705,428.79x = 973,498.87 × 383,145.18
  4. Step 4: Simplify right side
    705,428.79x = 372,991,399,775.95
  5. Step 5: Solve for x
    x = 372,991,399,775.95/705,428.79
  6. Step 6: Final answer
    x = 528,744.23

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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.