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Finding the Fourth Proportional to 760,315.12, 1,048,821 and 488,425.78

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Solution

The fourth proportional to 760,315.12, 1,048,821 and 488,425.78 is: 673,761.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,315.12 : 1,048,821 = 488,425.78 : x
  2. Step 2: Convert to fraction form
    760,315.12/1,048,821 = 488,425.78/x
  3. Step 3: Cross multiply
    760,315.12x = 1,048,821 × 488,425.78
  4. Step 4: Simplify right side
    760,315.12x = 512,271,215,005.38
  5. Step 5: Solve for x
    x = 512,271,215,005.38/760,315.12
  6. Step 6: Final answer
    x = 673,761.71

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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.