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Finding the Fourth Proportional to 788,779.40, 1,183,169.10 and 655,809.80

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Solution

The fourth proportional to 788,779.40, 1,183,169.10 and 655,809.80 is: 983,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,779.40 : 1,183,169.10 = 655,809.80 : x
  2. Step 2: Convert to fraction form
    788,779.40/1,183,169.10 = 655,809.80/x
  3. Step 3: Cross multiply
    788,779.40x = 1,183,169.10 × 655,809.80
  4. Step 4: Simplify right side
    788,779.40x = 775,933,890,837.18
  5. Step 5: Solve for x
    x = 775,933,890,837.18/788,779.40
  6. Step 6: Final answer
    x = 983,714.70

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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.