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Finding the Fourth Proportional to 559,985.64, 772,760.88 and 318,264

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Solution

The fourth proportional to 559,985.64, 772,760.88 and 318,264 is: 439,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,985.64 : 772,760.88 = 318,264 : x
  2. Step 2: Convert to fraction form
    559,985.64/772,760.88 = 318,264/x
  3. Step 3: Cross multiply
    559,985.64x = 772,760.88 × 318,264
  4. Step 4: Simplify right side
    559,985.64x = 245,941,968,712.32
  5. Step 5: Solve for x
    x = 245,941,968,712.32/559,985.64
  6. Step 6: Final answer
    x = 439,193.35

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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.