Home / 705,605.21-973,743.47-383,320.38

Finding the Fourth Proportional to 705,605.21, 973,743.47 and 383,320.38

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Solution

The fourth proportional to 705,605.21, 973,743.47 and 383,320.38 is: 528,986.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,605.21 : 973,743.47 = 383,320.38 : x
  2. Step 2: Convert to fraction form
    705,605.21/973,743.47 = 383,320.38/x
  3. Step 3: Cross multiply
    705,605.21x = 973,743.47 × 383,320.38
  4. Step 4: Simplify right side
    705,605.21x = 373,255,722,271.48
  5. Step 5: Solve for x
    x = 373,255,722,271.48/705,605.21
  6. Step 6: Final answer
    x = 528,986.63

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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.