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Finding the Fourth Proportional to 634,807.70, 876,032.21 and 348,332.57

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Solution

The fourth proportional to 634,807.70, 876,032.21 and 348,332.57 is: 480,697.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,807.70 : 876,032.21 = 348,332.57 : x
  2. Step 2: Convert to fraction form
    634,807.70/876,032.21 = 348,332.57/x
  3. Step 3: Cross multiply
    634,807.70x = 876,032.21 × 348,332.57
  4. Step 4: Simplify right side
    634,807.70x = 305,150,544,990.26
  5. Step 5: Solve for x
    x = 305,150,544,990.26/634,807.70
  6. Step 6: Final answer
    x = 480,697.62

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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.