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Finding the Fourth Proportional to 770,644.72, 1,063,703.64 and 448,417.27

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Solution

The fourth proportional to 770,644.72, 1,063,703.64 and 448,417.27 is: 618,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,644.72 : 1,063,703.64 = 448,417.27 : x
  2. Step 2: Convert to fraction form
    770,644.72/1,063,703.64 = 448,417.27/x
  3. Step 3: Cross multiply
    770,644.72x = 1,063,703.64 × 448,417.27
  4. Step 4: Simplify right side
    770,644.72x = 476,983,082,337.86
  5. Step 5: Solve for x
    x = 476,983,082,337.86/770,644.72
  6. Step 6: Final answer
    x = 618,940.31

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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.