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Finding the Fourth Proportional to 646,014.45, 891,491.06 and 359,534.49

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Solution

The fourth proportional to 646,014.45, 891,491.06 and 359,534.49 is: 496,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,014.45 : 891,491.06 = 359,534.49 : x
  2. Step 2: Convert to fraction form
    646,014.45/891,491.06 = 359,534.49/x
  3. Step 3: Cross multiply
    646,014.45x = 891,491.06 × 359,534.49
  4. Step 4: Simplify right side
    646,014.45x = 320,521,781,798.99
  5. Step 5: Solve for x
    x = 320,521,781,798.99/646,014.45
  6. Step 6: Final answer
    x = 496,152.65

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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.