Home / 742,561.75-1,113,664.22-342,818.47

Finding the Fourth Proportional to 742,561.75, 1,113,664.22 and 342,818.47

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Solution

The fourth proportional to 742,561.75, 1,113,664.22 and 342,818.47 is: 514,145.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,561.75 : 1,113,664.22 = 342,818.47 : x
  2. Step 2: Convert to fraction form
    742,561.75/1,113,664.22 = 342,818.47/x
  3. Step 3: Cross multiply
    742,561.75x = 1,113,664.22 × 342,818.47
  4. Step 4: Simplify right side
    742,561.75x = 381,784,663,994.14
  5. Step 5: Solve for x
    x = 381,784,663,994.14/742,561.75
  6. Step 6: Final answer
    x = 514,145.34

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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.