Home / 913,311.81-1,260,339.30-505,430.85

Finding the Fourth Proportional to 913,311.81, 1,260,339.30 and 505,430.85

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Solution

The fourth proportional to 913,311.81, 1,260,339.30 and 505,430.85 is: 697,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,311.81 : 1,260,339.30 = 505,430.85 : x
  2. Step 2: Convert to fraction form
    913,311.81/1,260,339.30 = 505,430.85/x
  3. Step 3: Cross multiply
    913,311.81x = 1,260,339.30 × 505,430.85
  4. Step 4: Simplify right side
    913,311.81x = 637,014,363,687.41
  5. Step 5: Solve for x
    x = 637,014,363,687.41/913,311.81
  6. Step 6: Final answer
    x = 697,477.42

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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.