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Finding the Fourth Proportional to 524,851.35, 724,114.30 and 318,186.39

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Solution

The fourth proportional to 524,851.35, 724,114.30 and 318,186.39 is: 438,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,851.35 : 724,114.30 = 318,186.39 : x
  2. Step 2: Convert to fraction form
    524,851.35/724,114.30 = 318,186.39/x
  3. Step 3: Cross multiply
    524,851.35x = 724,114.30 × 318,186.39
  4. Step 4: Simplify right side
    524,851.35x = 230,403,315,064.38
  5. Step 5: Solve for x
    x = 230,403,315,064.38/524,851.35
  6. Step 6: Final answer
    x = 438,987.75

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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.