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Finding the Fourth Proportional to 626,550.81, 864,637.92 and 340,070.90

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Solution

The fourth proportional to 626,550.81, 864,637.92 and 340,070.90 is: 469,296.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,550.81 : 864,637.92 = 340,070.90 : x
  2. Step 2: Convert to fraction form
    626,550.81/864,637.92 = 340,070.90/x
  3. Step 3: Cross multiply
    626,550.81x = 864,637.92 × 340,070.90
  4. Step 4: Simplify right side
    626,550.81x = 294,038,191,305.34
  5. Step 5: Solve for x
    x = 294,038,191,305.34/626,550.81
  6. Step 6: Final answer
    x = 469,296.64

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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.