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Finding the Fourth Proportional to 562,742.38, 776,512.15 and 321,010.52

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Solution

The fourth proportional to 562,742.38, 776,512.15 and 321,010.52 is: 442,953.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,742.38 : 776,512.15 = 321,010.52 : x
  2. Step 2: Convert to fraction form
    562,742.38/776,512.15 = 321,010.52/x
  3. Step 3: Cross multiply
    562,742.38x = 776,512.15 × 321,010.52
  4. Step 4: Simplify right side
    562,742.38x = 249,268,567,452.77
  5. Step 5: Solve for x
    x = 249,268,567,452.77/562,742.38
  6. Step 6: Final answer
    x = 442,953.26

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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.