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Finding the Fourth Proportional to 702,929.63, 970,047.50 and 380,639.74

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Solution

The fourth proportional to 702,929.63, 970,047.50 and 380,639.74 is: 525,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,929.63 : 970,047.50 = 380,639.74 : x
  2. Step 2: Convert to fraction form
    702,929.63/970,047.50 = 380,639.74/x
  3. Step 3: Cross multiply
    702,929.63x = 970,047.50 × 380,639.74
  4. Step 4: Simplify right side
    702,929.63x = 369,238,626,284.45
  5. Step 5: Solve for x
    x = 369,238,626,284.45/702,929.63
  6. Step 6: Final answer
    x = 525,285.34

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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.