Home / 839,780.72-1,158,548.48-495,480

Finding the Fourth Proportional to 839,780.72, 1,158,548.48 and 495,480

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Solution

The fourth proportional to 839,780.72, 1,158,548.48 and 495,480 is: 683,556.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,780.72 : 1,158,548.48 = 495,480 : x
  2. Step 2: Convert to fraction form
    839,780.72/1,158,548.48 = 495,480/x
  3. Step 3: Cross multiply
    839,780.72x = 1,158,548.48 × 495,480
  4. Step 4: Simplify right side
    839,780.72x = 574,037,600,870.40
  5. Step 5: Solve for x
    x = 574,037,600,870.40/839,780.72
  6. Step 6: Final answer
    x = 683,556.54

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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.