Home / 709,783.65-979,587.38-403,934.43

Finding the Fourth Proportional to 709,783.65, 979,587.38 and 403,934.43

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Solution

The fourth proportional to 709,783.65, 979,587.38 and 403,934.43 is: 557,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,783.65 : 979,587.38 = 403,934.43 : x
  2. Step 2: Convert to fraction form
    709,783.65/979,587.38 = 403,934.43/x
  3. Step 3: Cross multiply
    709,783.65x = 979,587.38 × 403,934.43
  4. Step 4: Simplify right side
    709,783.65x = 395,689,069,975.49
  5. Step 5: Solve for x
    x = 395,689,069,975.49/709,783.65
  6. Step 6: Final answer
    x = 557,478.42

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1.5x scale

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.