Home / 771,220.72-1,064,283.92-427,056.63

Finding the Fourth Proportional to 771,220.72, 1,064,283.92 and 427,056.63

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Solution

The fourth proportional to 771,220.72, 1,064,283.92 and 427,056.63 is: 589,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,220.72 : 1,064,283.92 = 427,056.63 : x
  2. Step 2: Convert to fraction form
    771,220.72/1,064,283.92 = 427,056.63/x
  3. Step 3: Cross multiply
    771,220.72x = 1,064,283.92 × 427,056.63
  4. Step 4: Simplify right side
    771,220.72x = 454,509,502,103.11
  5. Step 5: Solve for x
    x = 454,509,502,103.11/771,220.72
  6. Step 6: Final answer
    x = 589,337.78

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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.