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Finding the Fourth Proportional to 620,342.16, 856,098.60 and 352,095.12

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Solution

The fourth proportional to 620,342.16, 856,098.60 and 352,095.12 is: 485,906.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,342.16 : 856,098.60 = 352,095.12 : x
  2. Step 2: Convert to fraction form
    620,342.16/856,098.60 = 352,095.12/x
  3. Step 3: Cross multiply
    620,342.16x = 856,098.60 × 352,095.12
  4. Step 4: Simplify right side
    620,342.16x = 301,428,139,298.83
  5. Step 5: Solve for x
    x = 301,428,139,298.83/620,342.16
  6. Step 6: Final answer
    x = 485,906.26

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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.