Home / 778,854.80-1,167,821.40-405,606.80

Finding the Fourth Proportional to 778,854.80, 1,167,821.40 and 405,606.80

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Solution

The fourth proportional to 778,854.80, 1,167,821.40 and 405,606.80 is: 608,170.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,854.80 : 1,167,821.40 = 405,606.80 : x
  2. Step 2: Convert to fraction form
    778,854.80/1,167,821.40 = 405,606.80/x
  3. Step 3: Cross multiply
    778,854.80x = 1,167,821.40 × 405,606.80
  4. Step 4: Simplify right side
    778,854.80x = 473,676,301,025.52
  5. Step 5: Solve for x
    x = 473,676,301,025.52/778,854.80
  6. Step 6: Final answer
    x = 608,170.23

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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.