Home / 642,688.48-964,167.59-193,442.23

Finding the Fourth Proportional to 642,688.48, 964,167.59 and 193,442.23

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Solution

The fourth proportional to 642,688.48, 964,167.59 and 193,442.23 is: 290,203.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,688.48 : 964,167.59 = 193,442.23 : x
  2. Step 2: Convert to fraction form
    642,688.48/964,167.59 = 193,442.23/x
  3. Step 3: Cross multiply
    642,688.48x = 964,167.59 × 193,442.23
  4. Step 4: Simplify right side
    642,688.48x = 186,510,728,703.33
  5. Step 5: Solve for x
    x = 186,510,728,703.33/642,688.48
  6. Step 6: Final answer
    x = 290,203.94

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Double scale
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1.5x scale

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.