Home / 459,931.28-689,897.16-206,916.32

Finding the Fourth Proportional to 459,931.28, 689,897.16 and 206,916.32

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Solution

The fourth proportional to 459,931.28, 689,897.16 and 206,916.32 is: 310,374.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,931.28 : 689,897.16 = 206,916.32 : x
  2. Step 2: Convert to fraction form
    459,931.28/689,897.16 = 206,916.32/x
  3. Step 3: Cross multiply
    459,931.28x = 689,897.16 × 206,916.32
  4. Step 4: Simplify right side
    459,931.28x = 142,750,981,525.65
  5. Step 5: Solve for x
    x = 142,750,981,525.65/459,931.28
  6. Step 6: Final answer
    x = 310,374.59

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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.