Home / 459,742.20-689,807.70-291,391.80

Finding the Fourth Proportional to 459,742.20, 689,807.70 and 291,391.80

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Solution

The fourth proportional to 459,742.20, 689,807.70 and 291,391.80 is: 437,210.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,742.20 : 689,807.70 = 291,391.80 : x
  2. Step 2: Convert to fraction form
    459,742.20/689,807.70 = 291,391.80/x
  3. Step 3: Cross multiply
    459,742.20x = 689,807.70 × 291,391.80
  4. Step 4: Simplify right side
    459,742.20x = 201,004,307,356.86
  5. Step 5: Solve for x
    x = 201,004,307,356.86/459,742.20
  6. Step 6: Final answer
    x = 437,210.91

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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.