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Finding the Fourth Proportional to 570,233.64, 787,119.12 and 328,612.50

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Solution

The fourth proportional to 570,233.64, 787,119.12 and 328,612.50 is: 453,598.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,233.64 : 787,119.12 = 328,612.50 : x
  2. Step 2: Convert to fraction form
    570,233.64/787,119.12 = 328,612.50/x
  3. Step 3: Cross multiply
    570,233.64x = 787,119.12 × 328,612.50
  4. Step 4: Simplify right side
    570,233.64x = 258,657,181,821
  5. Step 5: Solve for x
    x = 258,657,181,821/570,233.64
  6. Step 6: Final answer
    x = 453,598.60

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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.