Home / 860,639.10-1,289,403.45-761,106.30

Finding the Fourth Proportional to 860,639.10, 1,289,403.45 and 761,106.30

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Solution

The fourth proportional to 860,639.10, 1,289,403.45 and 761,106.30 is: 1,140,284.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,639.10 : 1,289,403.45 = 761,106.30 : x
  2. Step 2: Convert to fraction form
    860,639.10/1,289,403.45 = 761,106.30/x
  3. Step 3: Cross multiply
    860,639.10x = 1,289,403.45 × 761,106.30
  4. Step 4: Simplify right side
    860,639.10x = 981,373,089,036.74
  5. Step 5: Solve for x
    x = 981,373,089,036.74/860,639.10
  6. Step 6: Final answer
    x = 1,140,284.11

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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.