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Finding the Fourth Proportional to 630,642.51, 870,289.11 and 344,169

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Solution

The fourth proportional to 630,642.51, 870,289.11 and 344,169 is: 474,954.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,642.51 : 870,289.11 = 344,169 : x
  2. Step 2: Convert to fraction form
    630,642.51/870,289.11 = 344,169/x
  3. Step 3: Cross multiply
    630,642.51x = 870,289.11 × 344,169
  4. Step 4: Simplify right side
    630,642.51x = 299,526,532,699.59
  5. Step 5: Solve for x
    x = 299,526,532,699.59/630,642.51
  6. Step 6: Final answer
    x = 474,954.55

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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.