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Finding the Fourth Proportional to 630,676.42, 870,353.75 and 358,737.32

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Solution

The fourth proportional to 630,676.42, 870,353.75 and 358,737.32 is: 495,069.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,676.42 : 870,353.75 = 358,737.32 : x
  2. Step 2: Convert to fraction form
    630,676.42/870,353.75 = 358,737.32/x
  3. Step 3: Cross multiply
    630,676.42x = 870,353.75 × 358,737.32
  4. Step 4: Simplify right side
    630,676.42x = 312,228,371,726.95
  5. Step 5: Solve for x
    x = 312,228,371,726.95/630,676.42
  6. Step 6: Final answer
    x = 495,069.04

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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.