Home / 619,429.03-855,178.50-390,182.83

Finding the Fourth Proportional to 619,429.03, 855,178.50 and 390,182.83

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Solution

The fourth proportional to 619,429.03, 855,178.50 and 390,182.83 is: 538,683.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,429.03 : 855,178.50 = 390,182.83 : x
  2. Step 2: Convert to fraction form
    619,429.03/855,178.50 = 390,182.83/x
  3. Step 3: Cross multiply
    619,429.03x = 855,178.50 × 390,182.83
  4. Step 4: Simplify right side
    619,429.03x = 333,675,967,285.16
  5. Step 5: Solve for x
    x = 333,675,967,285.16/619,429.03
  6. Step 6: Final answer
    x = 538,683.13

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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.