Home / 786,307.84-1,179,162.48-280,774.72

Finding the Fourth Proportional to 786,307.84, 1,179,162.48 and 280,774.72

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Solution

The fourth proportional to 786,307.84, 1,179,162.48 and 280,774.72 is: 421,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,307.84 : 1,179,162.48 = 280,774.72 : x
  2. Step 2: Convert to fraction form
    786,307.84/1,179,162.48 = 280,774.72/x
  3. Step 3: Cross multiply
    786,307.84x = 1,179,162.48 × 280,774.72
  4. Step 4: Simplify right side
    786,307.84x = 331,079,015,156.51
  5. Step 5: Solve for x
    x = 331,079,015,156.51/786,307.84
  6. Step 6: Final answer
    x = 421,055.21

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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.