Home / 690,666.24-1,036,140.30-291,306.27

Finding the Fourth Proportional to 690,666.24, 1,036,140.30 and 291,306.27

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Solution

The fourth proportional to 690,666.24, 1,036,140.30 and 291,306.27 is: 437,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,666.24 : 1,036,140.30 = 291,306.27 : x
  2. Step 2: Convert to fraction form
    690,666.24/1,036,140.30 = 291,306.27/x
  3. Step 3: Cross multiply
    690,666.24x = 1,036,140.30 × 291,306.27
  4. Step 4: Simplify right side
    690,666.24x = 301,834,165,989.68
  5. Step 5: Solve for x
    x = 301,834,165,989.68/690,666.24
  6. Step 6: Final answer
    x = 437,018.85

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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.