Home / 860,012.74-1,290,030.63-299,057.86

Finding the Fourth Proportional to 860,012.74, 1,290,030.63 and 299,057.86

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Solution

The fourth proportional to 860,012.74, 1,290,030.63 and 299,057.86 is: 448,590.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,012.74 : 1,290,030.63 = 299,057.86 : x
  2. Step 2: Convert to fraction form
    860,012.74/1,290,030.63 = 299,057.86/x
  3. Step 3: Cross multiply
    860,012.74x = 1,290,030.63 × 299,057.86
  4. Step 4: Simplify right side
    860,012.74x = 385,793,799,542.25
  5. Step 5: Solve for x
    x = 385,793,799,542.25/860,012.74
  6. Step 6: Final answer
    x = 448,590.80

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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.