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Finding the Fourth Proportional to 479,815.19, 716,611.71 and 434,746.44

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Solution

The fourth proportional to 479,815.19, 716,611.71 and 434,746.44 is: 649,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,815.19 : 716,611.71 = 434,746.44 : x
  2. Step 2: Convert to fraction form
    479,815.19/716,611.71 = 434,746.44/x
  3. Step 3: Cross multiply
    479,815.19x = 716,611.71 × 434,746.44
  4. Step 4: Simplify right side
    479,815.19x = 311,544,388,969.66
  5. Step 5: Solve for x
    x = 311,544,388,969.66/479,815.19
  6. Step 6: Final answer
    x = 649,300.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.