Home / 495,736.80-742,784.40-285,007.20

Finding the Fourth Proportional to 495,736.80, 742,784.40 and 285,007.20

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Solution

The fourth proportional to 495,736.80, 742,784.40 and 285,007.20 is: 427,038.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,736.80 : 742,784.40 = 285,007.20 : x
  2. Step 2: Convert to fraction form
    495,736.80/742,784.40 = 285,007.20/x
  3. Step 3: Cross multiply
    495,736.80x = 742,784.40 × 285,007.20
  4. Step 4: Simplify right side
    495,736.80x = 211,698,902,047.68
  5. Step 5: Solve for x
    x = 211,698,902,047.68/495,736.80
  6. Step 6: Final answer
    x = 427,038.91

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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.