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Finding the Fourth Proportional to 456,415.10, 684,622.65 and 453,790.70

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Solution

The fourth proportional to 456,415.10, 684,622.65 and 453,790.70 is: 680,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,415.10 : 684,622.65 = 453,790.70 : x
  2. Step 2: Convert to fraction form
    456,415.10/684,622.65 = 453,790.70/x
  3. Step 3: Cross multiply
    456,415.10x = 684,622.65 × 453,790.70
  4. Step 4: Simplify right side
    456,415.10x = 310,675,391,579.36
  5. Step 5: Solve for x
    x = 310,675,391,579.36/456,415.10
  6. Step 6: Final answer
    x = 680,686.05

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Similar ratio
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1.5x scale

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.