Home / 858,893.10-1,288,339.65-297,984.30

Finding the Fourth Proportional to 858,893.10, 1,288,339.65 and 297,984.30

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Solution

The fourth proportional to 858,893.10, 1,288,339.65 and 297,984.30 is: 446,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,893.10 : 1,288,339.65 = 297,984.30 : x
  2. Step 2: Convert to fraction form
    858,893.10/1,288,339.65 = 297,984.30/x
  3. Step 3: Cross multiply
    858,893.10x = 1,288,339.65 × 297,984.30
  4. Step 4: Simplify right side
    858,893.10x = 383,904,988,767.50
  5. Step 5: Solve for x
    x = 383,904,988,767.50/858,893.10
  6. Step 6: Final answer
    x = 446,976.45

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Double scale
Find fourth proportional to 858,894.10, 1,288,341.15 and 297,985.30
Similar ratio
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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.