Home / 915,109.54-1,371,750.73-315,688.34

Finding the Fourth Proportional to 915,109.54, 1,371,750.73 and 315,688.34

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Solution

The fourth proportional to 915,109.54, 1,371,750.73 and 315,688.34 is: 473,217.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,109.54 : 1,371,750.73 = 315,688.34 : x
  2. Step 2: Convert to fraction form
    915,109.54/1,371,750.73 = 315,688.34/x
  3. Step 3: Cross multiply
    915,109.54x = 1,371,750.73 × 315,688.34
  4. Step 4: Simplify right side
    915,109.54x = 433,045,713,487.64
  5. Step 5: Solve for x
    x = 433,045,713,487.64/915,109.54
  6. Step 6: Final answer
    x = 473,217.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.