Home / 856,820.10-1,285,230.15-436,916.10

Finding the Fourth Proportional to 856,820.10, 1,285,230.15 and 436,916.10

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Solution

The fourth proportional to 856,820.10, 1,285,230.15 and 436,916.10 is: 655,374.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,820.10 : 1,285,230.15 = 436,916.10 : x
  2. Step 2: Convert to fraction form
    856,820.10/1,285,230.15 = 436,916.10/x
  3. Step 3: Cross multiply
    856,820.10x = 1,285,230.15 × 436,916.10
  4. Step 4: Simplify right side
    856,820.10x = 561,537,744,740.42
  5. Step 5: Solve for x
    x = 561,537,744,740.42/856,820.10
  6. Step 6: Final answer
    x = 655,374.15

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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.