Home / 678,965.40-936,582.48-423,873.72

Finding the Fourth Proportional to 678,965.40, 936,582.48 and 423,873.72

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Solution

The fourth proportional to 678,965.40, 936,582.48 and 423,873.72 is: 584,702.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,965.40 : 936,582.48 = 423,873.72 : x
  2. Step 2: Convert to fraction form
    678,965.40/936,582.48 = 423,873.72/x
  3. Step 3: Cross multiply
    678,965.40x = 936,582.48 × 423,873.72
  4. Step 4: Simplify right side
    678,965.40x = 396,992,699,884.43
  5. Step 5: Solve for x
    x = 396,992,699,884.43/678,965.40
  6. Step 6: Final answer
    x = 584,702.40

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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.