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Finding the Fourth Proportional to 620,802.83, 856,730.45 and 348,876.11

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Solution

The fourth proportional to 620,802.83, 856,730.45 and 348,876.11 is: 481,461.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,802.83 : 856,730.45 = 348,876.11 : x
  2. Step 2: Convert to fraction form
    620,802.83/856,730.45 = 348,876.11/x
  3. Step 3: Cross multiply
    620,802.83x = 856,730.45 × 348,876.11
  4. Step 4: Simplify right side
    620,802.83x = 298,892,782,430.90
  5. Step 5: Solve for x
    x = 298,892,782,430.90/620,802.83
  6. Step 6: Final answer
    x = 481,461.70

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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.