Home / 680,503.15-1,020,068.53-427,964.08

Finding the Fourth Proportional to 680,503.15, 1,020,068.53 and 427,964.08

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Solution

The fourth proportional to 680,503.15, 1,020,068.53 and 427,964.08 is: 641,514.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,503.15 : 1,020,068.53 = 427,964.08 : x
  2. Step 2: Convert to fraction form
    680,503.15/1,020,068.53 = 427,964.08/x
  3. Step 3: Cross multiply
    680,503.15x = 1,020,068.53 × 427,964.08
  4. Step 4: Simplify right side
    680,503.15x = 436,552,689,978.40
  5. Step 5: Solve for x
    x = 436,552,689,978.40/680,503.15
  6. Step 6: Final answer
    x = 641,514.58

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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.