Home / 651,036.80-976,555.20-399,094.40

Finding the Fourth Proportional to 651,036.80, 976,555.20 and 399,094.40

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Solution

The fourth proportional to 651,036.80, 976,555.20 and 399,094.40 is: 598,641.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,036.80 : 976,555.20 = 399,094.40 : x
  2. Step 2: Convert to fraction form
    651,036.80/976,555.20 = 399,094.40/x
  3. Step 3: Cross multiply
    651,036.80x = 976,555.20 × 399,094.40
  4. Step 4: Simplify right side
    651,036.80x = 389,737,711,610.88
  5. Step 5: Solve for x
    x = 389,737,711,610.88/651,036.80
  6. Step 6: Final answer
    x = 598,641.60

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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.