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Finding the Fourth Proportional to 630,529.88, 870,150.46 and 358,636.95

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Solution

The fourth proportional to 630,529.88, 870,150.46 and 358,636.95 is: 494,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,529.88 : 870,150.46 = 358,636.95 : x
  2. Step 2: Convert to fraction form
    630,529.88/870,150.46 = 358,636.95/x
  3. Step 3: Cross multiply
    630,529.88x = 870,150.46 × 358,636.95
  4. Step 4: Simplify right side
    630,529.88x = 312,068,107,015.50
  5. Step 5: Solve for x
    x = 312,068,107,015.50/630,529.88
  6. Step 6: Final answer
    x = 494,929.93

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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.