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Finding the Fourth Proportional to 716,270.04, 988,478.64 and 394,005.06

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Solution

The fourth proportional to 716,270.04, 988,478.64 and 394,005.06 is: 543,741.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,270.04 : 988,478.64 = 394,005.06 : x
  2. Step 2: Convert to fraction form
    716,270.04/988,478.64 = 394,005.06/x
  3. Step 3: Cross multiply
    716,270.04x = 988,478.64 × 394,005.06
  4. Step 4: Simplify right side
    716,270.04x = 389,465,585,861.92
  5. Step 5: Solve for x
    x = 389,465,585,861.92/716,270.04
  6. Step 6: Final answer
    x = 543,741.28

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1.5x scale

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.