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Finding the Fourth Proportional to 628,868.69, 867,837.48 and 342,386.27

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Solution

The fourth proportional to 628,868.69, 867,837.48 and 342,386.27 is: 472,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,868.69 : 867,837.48 = 342,386.27 : x
  2. Step 2: Convert to fraction form
    628,868.69/867,837.48 = 342,386.27/x
  3. Step 3: Cross multiply
    628,868.69x = 867,837.48 × 342,386.27
  4. Step 4: Simplify right side
    628,868.69x = 297,135,637,743.40
  5. Step 5: Solve for x
    x = 297,135,637,743.40/628,868.69
  6. Step 6: Final answer
    x = 472,492.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.