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Finding the Fourth Proportional to 634,870.72, 876,146.85 and 348,401.06

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Solution

The fourth proportional to 634,870.72, 876,146.85 and 348,401.06 is: 480,807.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,870.72 : 876,146.85 = 348,401.06 : x
  2. Step 2: Convert to fraction form
    634,870.72/876,146.85 = 348,401.06/x
  3. Step 3: Cross multiply
    634,870.72x = 876,146.85 × 348,401.06
  4. Step 4: Simplify right side
    634,870.72x = 305,250,486,874.93
  5. Step 5: Solve for x
    x = 305,250,486,874.93/634,870.72
  6. Step 6: Final answer
    x = 480,807.32

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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.