Home / 628,619.63-867,495.08-342,141.76

Finding the Fourth Proportional to 628,619.63, 867,495.08 and 342,141.76

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Solution

The fourth proportional to 628,619.63, 867,495.08 and 342,141.76 is: 472,155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,619.63 : 867,495.08 = 342,141.76 : x
  2. Step 2: Convert to fraction form
    628,619.63/867,495.08 = 342,141.76/x
  3. Step 3: Cross multiply
    628,619.63x = 867,495.08 × 342,141.76
  4. Step 4: Simplify right side
    628,619.63x = 296,806,295,402.26
  5. Step 5: Solve for x
    x = 296,806,295,402.26/628,619.63
  6. Step 6: Final answer
    x = 472,155.63

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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.