Home / 628,701.58-867,627.75-342,240.76

Finding the Fourth Proportional to 628,701.58, 867,627.75 and 342,240.76

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Solution

The fourth proportional to 628,701.58, 867,627.75 and 342,240.76 is: 472,302.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,701.58 : 867,627.75 = 342,240.76 : x
  2. Step 2: Convert to fraction form
    628,701.58/867,627.75 = 342,240.76/x
  3. Step 3: Cross multiply
    628,701.58x = 867,627.75 × 342,240.76
  4. Step 4: Simplify right side
    628,701.58x = 296,937,580,557.09
  5. Step 5: Solve for x
    x = 296,937,580,557.09/628,701.58
  6. Step 6: Final answer
    x = 472,302.90

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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.