Home / 653,688.12-902,128.14-492,258.36

Finding the Fourth Proportional to 653,688.12, 902,128.14 and 492,258.36

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Solution

The fourth proportional to 653,688.12, 902,128.14 and 492,258.36 is: 679,345.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,688.12 : 902,128.14 = 492,258.36 : x
  2. Step 2: Convert to fraction form
    653,688.12/902,128.14 = 492,258.36/x
  3. Step 3: Cross multiply
    653,688.12x = 902,128.14 × 492,258.36
  4. Step 4: Simplify right side
    653,688.12x = 444,080,118,706.25
  5. Step 5: Solve for x
    x = 444,080,118,706.25/653,688.12
  6. Step 6: Final answer
    x = 679,345.56

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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.