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Finding the Fourth Proportional to 531,005.81, 732,453.23 and 315,985.37

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Solution

The fourth proportional to 531,005.81, 732,453.23 and 315,985.37 is: 435,860.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,005.81 : 732,453.23 = 315,985.37 : x
  2. Step 2: Convert to fraction form
    531,005.81/732,453.23 = 315,985.37/x
  3. Step 3: Cross multiply
    531,005.81x = 732,453.23 × 315,985.37
  4. Step 4: Simplify right side
    531,005.81x = 231,444,502,016.94
  5. Step 5: Solve for x
    x = 231,444,502,016.94/531,005.81
  6. Step 6: Final answer
    x = 435,860.59

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1.5x scale

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.