Home / 815,756.91-1,223,666.07-310,223.64

Finding the Fourth Proportional to 815,756.91, 1,223,666.07 and 310,223.64

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Solution

The fourth proportional to 815,756.91, 1,223,666.07 and 310,223.64 is: 465,347.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,756.91 : 1,223,666.07 = 310,223.64 : x
  2. Step 2: Convert to fraction form
    815,756.91/1,223,666.07 = 310,223.64/x
  3. Step 3: Cross multiply
    815,756.91x = 1,223,666.07 × 310,223.64
  4. Step 4: Simplify right side
    815,756.91x = 379,610,142,379.90
  5. Step 5: Solve for x
    x = 379,610,142,379.90/815,756.91
  6. Step 6: Final answer
    x = 465,347.14

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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.