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Finding the Fourth Proportional to 620,945.84, 930,988.38 and 316,749.26

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Solution

The fourth proportional to 620,945.84, 930,988.38 and 316,749.26 is: 474,904.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,945.84 : 930,988.38 = 316,749.26 : x
  2. Step 2: Convert to fraction form
    620,945.84/930,988.38 = 316,749.26/x
  3. Step 3: Cross multiply
    620,945.84x = 930,988.38 × 316,749.26
  4. Step 4: Simplify right side
    620,945.84x = 294,889,880,433.60
  5. Step 5: Solve for x
    x = 294,889,880,433.60/620,945.84
  6. Step 6: Final answer
    x = 474,904.35

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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.