Home / 674,415.72-1,012,122.32-319,430.36

Finding the Fourth Proportional to 674,415.72, 1,012,122.32 and 319,430.36

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Solution

The fourth proportional to 674,415.72, 1,012,122.32 and 319,430.36 is: 479,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,415.72 : 1,012,122.32 = 319,430.36 : x
  2. Step 2: Convert to fraction form
    674,415.72/1,012,122.32 = 319,430.36/x
  3. Step 3: Cross multiply
    674,415.72x = 1,012,122.32 × 319,430.36
  4. Step 4: Simplify right side
    674,415.72x = 323,302,597,041.64
  5. Step 5: Solve for x
    x = 323,302,597,041.64/674,415.72
  6. Step 6: Final answer
    x = 479,381.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.