Home / 459,191.20-689,015.28-307,490.08

Finding the Fourth Proportional to 459,191.20, 689,015.28 and 307,490.08

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Solution

The fourth proportional to 459,191.20, 689,015.28 and 307,490.08 is: 461,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,191.20 : 689,015.28 = 307,490.08 : x
  2. Step 2: Convert to fraction form
    459,191.20/689,015.28 = 307,490.08/x
  3. Step 3: Cross multiply
    459,191.20x = 689,015.28 × 307,490.08
  4. Step 4: Simplify right side
    459,191.20x = 211,865,363,568.42
  5. Step 5: Solve for x
    x = 211,865,363,568.42/459,191.20
  6. Step 6: Final answer
    x = 461,388.12

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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.