Home / 642,918.51-964,066.05-193,555.62

Finding the Fourth Proportional to 642,918.51, 964,066.05 and 193,555.62

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Solution

The fourth proportional to 642,918.51, 964,066.05 and 193,555.62 is: 290,239.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,918.51 : 964,066.05 = 193,555.62 : x
  2. Step 2: Convert to fraction form
    642,918.51/964,066.05 = 193,555.62/x
  3. Step 3: Cross multiply
    642,918.51x = 964,066.05 × 193,555.62
  4. Step 4: Simplify right side
    642,918.51x = 186,600,402,028.70
  5. Step 5: Solve for x
    x = 186,600,402,028.70/642,918.51
  6. Step 6: Final answer
    x = 290,239.59

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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.