Home / 430,583.06-645,284.10-272,529.38

Finding the Fourth Proportional to 430,583.06, 645,284.10 and 272,529.38

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Solution

The fourth proportional to 430,583.06, 645,284.10 and 272,529.38 is: 408,420.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,583.06 : 645,284.10 = 272,529.38 : x
  2. Step 2: Convert to fraction form
    430,583.06/645,284.10 = 272,529.38/x
  3. Step 3: Cross multiply
    430,583.06x = 645,284.10 × 272,529.38
  4. Step 4: Simplify right side
    430,583.06x = 175,858,875,696.86
  5. Step 5: Solve for x
    x = 175,858,875,696.86/430,583.06
  6. Step 6: Final answer
    x = 408,420.33

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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.