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Finding the Fourth Proportional to 559,988.76, 772,767.84 and 318,297.72

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Solution

The fourth proportional to 559,988.76, 772,767.84 and 318,297.72 is: 439,241.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,988.76 : 772,767.84 = 318,297.72 : x
  2. Step 2: Convert to fraction form
    559,988.76/772,767.84 = 318,297.72/x
  3. Step 3: Cross multiply
    559,988.76x = 772,767.84 × 318,297.72
  4. Step 4: Simplify right side
    559,988.76x = 245,970,241,561.33
  5. Step 5: Solve for x
    x = 245,970,241,561.33/559,988.76
  6. Step 6: Final answer
    x = 439,241.39

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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.