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Finding the Fourth Proportional to 570,951.89, 856,959.20 and 290,678.93

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Solution

The fourth proportional to 570,951.89, 856,959.20 and 290,678.93 is: 436,288.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,951.89 : 856,959.20 = 290,678.93 : x
  2. Step 2: Convert to fraction form
    570,951.89/856,959.20 = 290,678.93/x
  3. Step 3: Cross multiply
    570,951.89x = 856,959.20 × 290,678.93
  4. Step 4: Simplify right side
    570,951.89x = 249,099,983,309.66
  5. Step 5: Solve for x
    x = 249,099,983,309.66/570,951.89
  6. Step 6: Final answer
    x = 436,288.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.