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Finding the Fourth Proportional to 634,989.90, 876,258.63 and 348,514.86

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Solution

The fourth proportional to 634,989.90, 876,258.63 and 348,514.86 is: 480,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,989.90 : 876,258.63 = 348,514.86 : x
  2. Step 2: Convert to fraction form
    634,989.90/876,258.63 = 348,514.86/x
  3. Step 3: Cross multiply
    634,989.90x = 876,258.63 × 348,514.86
  4. Step 4: Simplify right side
    634,989.90x = 305,389,153,758.24
  5. Step 5: Solve for x
    x = 305,389,153,758.24/634,989.90
  6. Step 6: Final answer
    x = 480,935.45

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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.