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Finding the Fourth Proportional to 677,535.67, 934,931.82 and 391,148.02

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Solution

The fourth proportional to 677,535.67, 934,931.82 and 391,148.02 is: 539,745.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,535.67 : 934,931.82 = 391,148.02 : x
  2. Step 2: Convert to fraction form
    677,535.67/934,931.82 = 391,148.02/x
  3. Step 3: Cross multiply
    677,535.67x = 934,931.82 × 391,148.02
  4. Step 4: Simplify right side
    677,535.67x = 365,696,730,228.00
  5. Step 5: Solve for x
    x = 365,696,730,228.00/677,535.67
  6. Step 6: Final answer
    x = 539,745.35

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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.