Home / 864,000.30-1,296,000.45-609,638.70

Finding the Fourth Proportional to 864,000.30, 1,296,000.45 and 609,638.70

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Solution

The fourth proportional to 864,000.30, 1,296,000.45 and 609,638.70 is: 914,458.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,000.30 : 1,296,000.45 = 609,638.70 : x
  2. Step 2: Convert to fraction form
    864,000.30/1,296,000.45 = 609,638.70/x
  3. Step 3: Cross multiply
    864,000.30x = 1,296,000.45 × 609,638.70
  4. Step 4: Simplify right side
    864,000.30x = 790,092,029,537.42
  5. Step 5: Solve for x
    x = 790,092,029,537.42/864,000.30
  6. Step 6: Final answer
    x = 914,458.05

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Double scale
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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.