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Finding the Fourth Proportional to 570,124.30, 786,855 and 328,359.82

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Solution

The fourth proportional to 570,124.30, 786,855 and 328,359.82 is: 453,184.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,124.30 : 786,855 = 328,359.82 : x
  2. Step 2: Convert to fraction form
    570,124.30/786,855 = 328,359.82/x
  3. Step 3: Cross multiply
    570,124.30x = 786,855 × 328,359.82
  4. Step 4: Simplify right side
    570,124.30x = 258,371,566,166.10
  5. Step 5: Solve for x
    x = 258,371,566,166.10/570,124.30
  6. Step 6: Final answer
    x = 453,184.62

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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.