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Finding the Fourth Proportional to 455,443.20, 681,819.12 and 435,957.12

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Solution

The fourth proportional to 455,443.20, 681,819.12 and 435,957.12 is: 652,647.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,443.20 : 681,819.12 = 435,957.12 : x
  2. Step 2: Convert to fraction form
    455,443.20/681,819.12 = 435,957.12/x
  3. Step 3: Cross multiply
    455,443.20x = 681,819.12 × 435,957.12
  4. Step 4: Simplify right side
    455,443.20x = 297,243,899,916.13
  5. Step 5: Solve for x
    x = 297,243,899,916.13/455,443.20
  6. Step 6: Final answer
    x = 652,647.57

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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.