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Finding the Fourth Proportional to 691,925, 954,038.58 and 488,009.48

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Solution

The fourth proportional to 691,925, 954,038.58 and 488,009.48 is: 672,876.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,925 : 954,038.58 = 488,009.48 : x
  2. Step 2: Convert to fraction form
    691,925/954,038.58 = 488,009.48/x
  3. Step 3: Cross multiply
    691,925x = 954,038.58 × 488,009.48
  4. Step 4: Simplify right side
    691,925x = 465,579,871,325.74
  5. Step 5: Solve for x
    x = 465,579,871,325.74/691,925
  6. Step 6: Final answer
    x = 672,876.21

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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.