Home / 465,554.32-642,415.08-312,561.52

Finding the Fourth Proportional to 465,554.32, 642,415.08 and 312,561.52

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Solution

The fourth proportional to 465,554.32, 642,415.08 and 312,561.52 is: 431,301.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,554.32 : 642,415.08 = 312,561.52 : x
  2. Step 2: Convert to fraction form
    465,554.32/642,415.08 = 312,561.52/x
  3. Step 3: Cross multiply
    465,554.32x = 642,415.08 × 312,561.52
  4. Step 4: Simplify right side
    465,554.32x = 200,794,233,875.72
  5. Step 5: Solve for x
    x = 200,794,233,875.72/465,554.32
  6. Step 6: Final answer
    x = 431,301.41

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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.