Home / 457,013.36-630,603.24-287,126.48

Finding the Fourth Proportional to 457,013.36, 630,603.24 and 287,126.48

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Solution

The fourth proportional to 457,013.36, 630,603.24 and 287,126.48 is: 396,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,013.36 : 630,603.24 = 287,126.48 : x
  2. Step 2: Convert to fraction form
    457,013.36/630,603.24 = 287,126.48/x
  3. Step 3: Cross multiply
    457,013.36x = 630,603.24 × 287,126.48
  4. Step 4: Simplify right side
    457,013.36x = 181,062,888,577.80
  5. Step 5: Solve for x
    x = 181,062,888,577.80/457,013.36
  6. Step 6: Final answer
    x = 396,187.30

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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.