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Finding the Fourth Proportional to 630,751.80, 947,401.08 and 378,511.32

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Solution

The fourth proportional to 630,751.80, 947,401.08 and 378,511.32 is: 568,531.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,751.80 : 947,401.08 = 378,511.32 : x
  2. Step 2: Convert to fraction form
    630,751.80/947,401.08 = 378,511.32/x
  3. Step 3: Cross multiply
    630,751.80x = 947,401.08 × 378,511.32
  4. Step 4: Simplify right side
    630,751.80x = 358,602,033,360.23
  5. Step 5: Solve for x
    x = 358,602,033,360.23/630,751.80
  6. Step 6: Final answer
    x = 568,531.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.