Home / 858,708.90-1,287,026.55-437,768.10

Finding the Fourth Proportional to 858,708.90, 1,287,026.55 and 437,768.10

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Solution

The fourth proportional to 858,708.90, 1,287,026.55 and 437,768.10 is: 656,123.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,708.90 : 1,287,026.55 = 437,768.10 : x
  2. Step 2: Convert to fraction form
    858,708.90/1,287,026.55 = 437,768.10/x
  3. Step 3: Cross multiply
    858,708.90x = 1,287,026.55 × 437,768.10
  4. Step 4: Simplify right side
    858,708.90x = 563,419,167,443.06
  5. Step 5: Solve for x
    x = 563,419,167,443.06/858,708.90
  6. Step 6: Final answer
    x = 656,123.59

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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.