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Finding the Fourth Proportional to 585,939.80, 879,492.90 and 286,758.20

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Solution

The fourth proportional to 585,939.80, 879,492.90 and 286,758.20 is: 430,422.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,939.80 : 879,492.90 = 286,758.20 : x
  2. Step 2: Convert to fraction form
    585,939.80/879,492.90 = 286,758.20/x
  3. Step 3: Cross multiply
    585,939.80x = 879,492.90 × 286,758.20
  4. Step 4: Simplify right side
    585,939.80x = 252,201,800,916.78
  5. Step 5: Solve for x
    x = 252,201,800,916.78/585,939.80
  6. Step 6: Final answer
    x = 430,422.72

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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.