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Finding the Fourth Proportional to 630,373.34, 869,911.16 and 358,441.31

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Solution

The fourth proportional to 630,373.34, 869,911.16 and 358,441.31 is: 494,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,373.34 : 869,911.16 = 358,441.31 : x
  2. Step 2: Convert to fraction form
    630,373.34/869,911.16 = 358,441.31/x
  3. Step 3: Cross multiply
    630,373.34x = 869,911.16 × 358,441.31
  4. Step 4: Simplify right side
    630,373.34x = 311,812,089,632.26
  5. Step 5: Solve for x
    x = 311,812,089,632.26/630,373.34
  6. Step 6: Final answer
    x = 494,646.70

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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.