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Finding the Fourth Proportional to 559,729.96, 772,448.34 and 318,053.68

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Solution

The fourth proportional to 559,729.96, 772,448.34 and 318,053.68 is: 438,926.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,729.96 : 772,448.34 = 318,053.68 : x
  2. Step 2: Convert to fraction form
    559,729.96/772,448.34 = 318,053.68/x
  3. Step 3: Cross multiply
    559,729.96x = 772,448.34 × 318,053.68
  4. Step 4: Simplify right side
    559,729.96x = 245,680,037,146.89
  5. Step 5: Solve for x
    x = 245,680,037,146.89/559,729.96
  6. Step 6: Final answer
    x = 438,926.01

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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.