Home / 1,405,688.72-2,108,662.64-459,064.40

Finding the Fourth Proportional to 1,405,688.72, 2,108,662.64 and 459,064.40

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Solution

The fourth proportional to 1,405,688.72, 2,108,662.64 and 459,064.40 is: 688,638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,688.72 : 2,108,662.64 = 459,064.40 : x
  2. Step 2: Convert to fraction form
    1,405,688.72/2,108,662.64 = 459,064.40/x
  3. Step 3: Cross multiply
    1,405,688.72x = 2,108,662.64 × 459,064.40
  4. Step 4: Simplify right side
    1,405,688.72x = 968,011,949,634.02
  5. Step 5: Solve for x
    x = 968,011,949,634.02/1,405,688.72
  6. Step 6: Final answer
    x = 688,638.91

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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.