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Finding the Fourth Proportional to 630,063.90, 869,489.64 and 358,133.54

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Solution

The fourth proportional to 630,063.90, 869,489.64 and 358,133.54 is: 494,225.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,063.90 : 869,489.64 = 358,133.54 : x
  2. Step 2: Convert to fraction form
    630,063.90/869,489.64 = 358,133.54/x
  3. Step 3: Cross multiply
    630,063.90x = 869,489.64 × 358,133.54
  4. Step 4: Simplify right side
    630,063.90x = 311,393,398,419.08
  5. Step 5: Solve for x
    x = 311,393,398,419.08/630,063.90
  6. Step 6: Final answer
    x = 494,225.11

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1.5x scale

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.