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Finding the Fourth Proportional to 554,138.02, 830,004.12 and 340,256.71

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Solution

The fourth proportional to 554,138.02, 830,004.12 and 340,256.71 is: 509,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,138.02 : 830,004.12 = 340,256.71 : x
  2. Step 2: Convert to fraction form
    554,138.02/830,004.12 = 340,256.71/x
  3. Step 3: Cross multiply
    554,138.02x = 830,004.12 × 340,256.71
  4. Step 4: Simplify right side
    554,138.02x = 282,414,471,157.65
  5. Step 5: Solve for x
    x = 282,414,471,157.65/554,138.02
  6. Step 6: Final answer
    x = 509,646.44

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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.