Home / 430,562.18-645,988.57-190,643.33

Finding the Fourth Proportional to 430,562.18, 645,988.57 and 190,643.33

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Solution

The fourth proportional to 430,562.18, 645,988.57 and 190,643.33 is: 286,029.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,562.18 : 645,988.57 = 190,643.33 : x
  2. Step 2: Convert to fraction form
    430,562.18/645,988.57 = 190,643.33/x
  3. Step 3: Cross multiply
    430,562.18x = 645,988.57 × 190,643.33
  4. Step 4: Simplify right side
    430,562.18x = 123,153,413,265.10
  5. Step 5: Solve for x
    x = 123,153,413,265.10/430,562.18
  6. Step 6: Final answer
    x = 286,029.33

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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.