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Finding the Fourth Proportional to 634,775.78, 876,005.87 and 348,295.64

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Solution

The fourth proportional to 634,775.78, 876,005.87 and 348,295.64 is: 480,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,775.78 : 876,005.87 = 348,295.64 : x
  2. Step 2: Convert to fraction form
    634,775.78/876,005.87 = 348,295.64/x
  3. Step 3: Cross multiply
    634,775.78x = 876,005.87 × 348,295.64
  4. Step 4: Simplify right side
    634,775.78x = 305,109,019,013.90
  5. Step 5: Solve for x
    x = 305,109,019,013.90/634,775.78
  6. Step 6: Final answer
    x = 480,656.36

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1.5x scale

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.