Home / 778,537.80-1,167,806.70-538,000.20

Finding the Fourth Proportional to 778,537.80, 1,167,806.70 and 538,000.20

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Solution

The fourth proportional to 778,537.80, 1,167,806.70 and 538,000.20 is: 807,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,537.80 : 1,167,806.70 = 538,000.20 : x
  2. Step 2: Convert to fraction form
    778,537.80/1,167,806.70 = 538,000.20/x
  3. Step 3: Cross multiply
    778,537.80x = 1,167,806.70 × 538,000.20
  4. Step 4: Simplify right side
    778,537.80x = 628,280,238,161.34
  5. Step 5: Solve for x
    x = 628,280,238,161.34/778,537.80
  6. Step 6: Final answer
    x = 807,000.30

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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.