Home / 765,090.72-1,147,775.04-315,566.40

Finding the Fourth Proportional to 765,090.72, 1,147,775.04 and 315,566.40

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Solution

The fourth proportional to 765,090.72, 1,147,775.04 and 315,566.40 is: 473,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,090.72 : 1,147,775.04 = 315,566.40 : x
  2. Step 2: Convert to fraction form
    765,090.72/1,147,775.04 = 315,566.40/x
  3. Step 3: Cross multiply
    765,090.72x = 1,147,775.04 × 315,566.40
  4. Step 4: Simplify right side
    765,090.72x = 362,199,237,382.66
  5. Step 5: Solve for x
    x = 362,199,237,382.66/765,090.72
  6. Step 6: Final answer
    x = 473,406.91

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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.