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Finding the Fourth Proportional to 570,876.64, 856,846.40 and 290,603.68

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Solution

The fourth proportional to 570,876.64, 856,846.40 and 290,603.68 is: 436,176.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,876.64 : 856,846.40 = 290,603.68 : x
  2. Step 2: Convert to fraction form
    570,876.64/856,846.40 = 290,603.68/x
  3. Step 3: Cross multiply
    570,876.64x = 856,846.40 × 290,603.68
  4. Step 4: Simplify right side
    570,876.64x = 249,002,717,034.75
  5. Step 5: Solve for x
    x = 249,002,717,034.75/570,876.64
  6. Step 6: Final answer
    x = 436,176.05

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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.