Home / 430,875.18-645,350.31-312,274.26

Finding the Fourth Proportional to 430,875.18, 645,350.31 and 312,274.26

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Solution

The fourth proportional to 430,875.18, 645,350.31 and 312,274.26 is: 467,713.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,875.18 : 645,350.31 = 312,274.26 : x
  2. Step 2: Convert to fraction form
    430,875.18/645,350.31 = 312,274.26/x
  3. Step 3: Cross multiply
    430,875.18x = 645,350.31 × 312,274.26
  4. Step 4: Simplify right side
    430,875.18x = 201,526,290,496.02
  5. Step 5: Solve for x
    x = 201,526,290,496.02/430,875.18
  6. Step 6: Final answer
    x = 467,713.85

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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.