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Finding the Fourth Proportional to 1,280,576.85, 1,767,528 and 736,768.32

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Solution

The fourth proportional to 1,280,576.85, 1,767,528 and 736,768.32 is: 1,016,931.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,576.85 : 1,767,528 = 736,768.32 : x
  2. Step 2: Convert to fraction form
    1,280,576.85/1,767,528 = 736,768.32/x
  3. Step 3: Cross multiply
    1,280,576.85x = 1,767,528 × 736,768.32
  4. Step 4: Simplify right side
    1,280,576.85x = 1,302,258,635,112.96
  5. Step 5: Solve for x
    x = 1,302,258,635,112.96/1,280,576.85
  6. Step 6: Final answer
    x = 1,016,931.26

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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.