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Finding the Fourth Proportional to 555,506.67, 766,661.58 and 313,804.83

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Solution

The fourth proportional to 555,506.67, 766,661.58 and 313,804.83 is: 433,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,506.67 : 766,661.58 = 313,804.83 : x
  2. Step 2: Convert to fraction form
    555,506.67/766,661.58 = 313,804.83/x
  3. Step 3: Cross multiply
    555,506.67x = 766,661.58 × 313,804.83
  4. Step 4: Simplify right side
    555,506.67x = 240,582,106,779.43
  5. Step 5: Solve for x
    x = 240,582,106,779.43/555,506.67
  6. Step 6: Final answer
    x = 433,085.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.