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Finding the Fourth Proportional to 570,767.18, 787,658.18 and 316,118.16

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Solution

The fourth proportional to 570,767.18, 787,658.18 and 316,118.16 is: 436,242.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,767.18 : 787,658.18 = 316,118.16 : x
  2. Step 2: Convert to fraction form
    570,767.18/787,658.18 = 316,118.16/x
  3. Step 3: Cross multiply
    570,767.18x = 787,658.18 × 316,118.16
  4. Step 4: Simplify right side
    570,767.18x = 248,993,052,989.96
  5. Step 5: Solve for x
    x = 248,993,052,989.96/570,767.18
  6. Step 6: Final answer
    x = 436,242.77

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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.