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Finding the Fourth Proportional to 630,752.80, 947,402.58 and 378,512.32

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Solution

The fourth proportional to 630,752.80, 947,402.58 and 378,512.32 is: 568,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,752.80 : 947,402.58 = 378,512.32 : x
  2. Step 2: Convert to fraction form
    630,752.80/947,402.58 = 378,512.32/x
  3. Step 3: Cross multiply
    630,752.80x = 947,402.58 × 378,512.32
  4. Step 4: Simplify right side
    630,752.80x = 358,603,548,529.79
  5. Step 5: Solve for x
    x = 358,603,548,529.79/630,752.80
  6. Step 6: Final answer
    x = 568,532.63

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1.5x scale

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.