Home / 858,339.64-1,287,509.42-457,766.84

Finding the Fourth Proportional to 858,339.64, 1,287,509.42 and 457,766.84

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Solution

The fourth proportional to 858,339.64, 1,287,509.42 and 457,766.84 is: 686,650.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,339.64 : 1,287,509.42 = 457,766.84 : x
  2. Step 2: Convert to fraction form
    858,339.64/1,287,509.42 = 457,766.84/x
  3. Step 3: Cross multiply
    858,339.64x = 1,287,509.42 × 457,766.84
  4. Step 4: Simplify right side
    858,339.64x = 589,379,118,663.63
  5. Step 5: Solve for x
    x = 589,379,118,663.63/858,339.64
  6. Step 6: Final answer
    x = 686,650.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.