Home / 777,128.25-1,165,638.90-477,655.05

Finding the Fourth Proportional to 777,128.25, 1,165,638.90 and 477,655.05

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Solution

The fourth proportional to 777,128.25, 1,165,638.90 and 477,655.05 is: 716,449.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,128.25 : 1,165,638.90 = 477,655.05 : x
  2. Step 2: Convert to fraction form
    777,128.25/1,165,638.90 = 477,655.05/x
  3. Step 3: Cross multiply
    777,128.25x = 1,165,638.90 × 477,655.05
  4. Step 4: Simplify right side
    777,128.25x = 556,773,307,061.45
  5. Step 5: Solve for x
    x = 556,773,307,061.45/777,128.25
  6. Step 6: Final answer
    x = 716,449.71

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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.