Home / 642,583.08-964,205.10-306,005.40

Finding the Fourth Proportional to 642,583.08, 964,205.10 and 306,005.40

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Solution

The fourth proportional to 642,583.08, 964,205.10 and 306,005.40 is: 459,165.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,583.08 : 964,205.10 = 306,005.40 : x
  2. Step 2: Convert to fraction form
    642,583.08/964,205.10 = 306,005.40/x
  3. Step 3: Cross multiply
    642,583.08x = 964,205.10 × 306,005.40
  4. Step 4: Simplify right side
    642,583.08x = 295,051,967,307.54
  5. Step 5: Solve for x
    x = 295,051,967,307.54/642,583.08
  6. Step 6: Final answer
    x = 459,165.48

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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.