Home / 829,559.27-1,145,145.65-557,784.70

Finding the Fourth Proportional to 829,559.27, 1,145,145.65 and 557,784.70

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Solution

The fourth proportional to 829,559.27, 1,145,145.65 and 557,784.70 is: 769,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,559.27 : 1,145,145.65 = 557,784.70 : x
  2. Step 2: Convert to fraction form
    829,559.27/1,145,145.65 = 557,784.70/x
  3. Step 3: Cross multiply
    829,559.27x = 1,145,145.65 × 557,784.70
  4. Step 4: Simplify right side
    829,559.27x = 638,744,717,189.77
  5. Step 5: Solve for x
    x = 638,744,717,189.77/829,559.27
  6. Step 6: Final answer
    x = 769,980.81

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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.