Home / 815,316.33-1,223,455.64-310,302.50

Finding the Fourth Proportional to 815,316.33, 1,223,455.64 and 310,302.50

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Solution

The fourth proportional to 815,316.33, 1,223,455.64 and 310,302.50 is: 465,636.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,316.33 : 1,223,455.64 = 310,302.50 : x
  2. Step 2: Convert to fraction form
    815,316.33/1,223,455.64 = 310,302.50/x
  3. Step 3: Cross multiply
    815,316.33x = 1,223,455.64 × 310,302.50
  4. Step 4: Simplify right side
    815,316.33x = 379,641,337,807.76
  5. Step 5: Solve for x
    x = 379,641,337,807.76/815,316.33
  6. Step 6: Final answer
    x = 465,636.86

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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.