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Finding the Fourth Proportional to 469,946.75, 648,863.53 and 288,901.40

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Solution

The fourth proportional to 469,946.75, 648,863.53 and 288,901.40 is: 398,891.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,946.75 : 648,863.53 = 288,901.40 : x
  2. Step 2: Convert to fraction form
    469,946.75/648,863.53 = 288,901.40/x
  3. Step 3: Cross multiply
    469,946.75x = 648,863.53 × 288,901.40
  4. Step 4: Simplify right side
    469,946.75x = 187,457,578,259.37
  5. Step 5: Solve for x
    x = 187,457,578,259.37/469,946.75
  6. Step 6: Final answer
    x = 398,891.11

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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.