Home / 858,894.10-1,288,341.15-297,985.30

Finding the Fourth Proportional to 858,894.10, 1,288,341.15 and 297,985.30

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Solution

The fourth proportional to 858,894.10, 1,288,341.15 and 297,985.30 is: 446,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,894.10 : 1,288,341.15 = 297,985.30 : x
  2. Step 2: Convert to fraction form
    858,894.10/1,288,341.15 = 297,985.30/x
  3. Step 3: Cross multiply
    858,894.10x = 1,288,341.15 × 297,985.30
  4. Step 4: Simplify right side
    858,894.10x = 383,906,724,085.10
  5. Step 5: Solve for x
    x = 383,906,724,085.10/858,894.10
  6. Step 6: Final answer
    x = 446,977.95

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Double scale
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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.