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Finding the Fourth Proportional to 630,893.89, 870,622.05 and 358,955.83

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Solution

The fourth proportional to 630,893.89, 870,622.05 and 358,955.83 is: 495,352.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,893.89 : 870,622.05 = 358,955.83 : x
  2. Step 2: Convert to fraction form
    630,893.89/870,622.05 = 358,955.83/x
  3. Step 3: Cross multiply
    630,893.89x = 870,622.05 × 358,955.83
  4. Step 4: Simplify right side
    630,893.89x = 312,514,860,574.05
  5. Step 5: Solve for x
    x = 312,514,860,574.05/630,893.89
  6. Step 6: Final answer
    x = 495,352.49

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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.