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Finding the Fourth Proportional to 630,373.16, 869,910.90 and 358,441.11

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Solution

The fourth proportional to 630,373.16, 869,910.90 and 358,441.11 is: 494,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,373.16 : 869,910.90 = 358,441.11 : x
  2. Step 2: Convert to fraction form
    630,373.16/869,910.90 = 358,441.11/x
  3. Step 3: Cross multiply
    630,373.16x = 869,910.90 × 358,441.11
  4. Step 4: Simplify right side
    630,373.16x = 311,811,828,597.10
  5. Step 5: Solve for x
    x = 311,811,828,597.10/630,373.16
  6. Step 6: Final answer
    x = 494,646.43

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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.