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Finding the Fourth Proportional to 620,420.20, 856,712.14 and 600,358.12

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Solution

The fourth proportional to 620,420.20, 856,712.14 and 600,358.12 is: 829,009.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,420.20 : 856,712.14 = 600,358.12 : x
  2. Step 2: Convert to fraction form
    620,420.20/856,712.14 = 600,358.12/x
  3. Step 3: Cross multiply
    620,420.20x = 856,712.14 × 600,358.12
  4. Step 4: Simplify right side
    620,420.20x = 514,334,089,751.58
  5. Step 5: Solve for x
    x = 514,334,089,751.58/620,420.20
  6. Step 6: Final answer
    x = 829,009.26

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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.