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Finding the Fourth Proportional to 630,749.80, 947,398.08 and 378,509.32

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Solution

The fourth proportional to 630,749.80, 947,398.08 and 378,509.32 is: 568,528.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,749.80 : 947,398.08 = 378,509.32 : x
  2. Step 2: Convert to fraction form
    630,749.80/947,398.08 = 378,509.32/x
  3. Step 3: Cross multiply
    630,749.80x = 947,398.08 × 378,509.32
  4. Step 4: Simplify right side
    630,749.80x = 358,599,003,030.11
  5. Step 5: Solve for x
    x = 358,599,003,030.11/630,749.80
  6. Step 6: Final answer
    x = 568,528.13

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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.