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Finding the Fourth Proportional to 450,890.88, 621,947.88 and 289,955.76

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Solution

The fourth proportional to 450,890.88, 621,947.88 and 289,955.76 is: 399,957.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,890.88 : 621,947.88 = 289,955.76 : x
  2. Step 2: Convert to fraction form
    450,890.88/621,947.88 = 289,955.76/x
  3. Step 3: Cross multiply
    450,890.88x = 621,947.88 × 289,955.76
  4. Step 4: Simplify right side
    450,890.88x = 180,337,370,225.79
  5. Step 5: Solve for x
    x = 180,337,370,225.79/450,890.88
  6. Step 6: Final answer
    x = 399,957.90

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1.5x scale

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.