Home / 778,057.20-1,166,999.40-637,570.80

Finding the Fourth Proportional to 778,057.20, 1,166,999.40 and 637,570.80

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Solution

The fourth proportional to 778,057.20, 1,166,999.40 and 637,570.80 is: 956,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,057.20 : 1,166,999.40 = 637,570.80 : x
  2. Step 2: Convert to fraction form
    778,057.20/1,166,999.40 = 637,570.80/x
  3. Step 3: Cross multiply
    778,057.20x = 1,166,999.40 × 637,570.80
  4. Step 4: Simplify right side
    778,057.20x = 744,044,741,057.52
  5. Step 5: Solve for x
    x = 744,044,741,057.52/778,057.20
  6. Step 6: Final answer
    x = 956,285.40

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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.