Home / 872,582.40-1,308,873.60-860,140.80

Finding the Fourth Proportional to 872,582.40, 1,308,873.60 and 860,140.80

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Solution

The fourth proportional to 872,582.40, 1,308,873.60 and 860,140.80 is: 1,290,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,582.40 : 1,308,873.60 = 860,140.80 : x
  2. Step 2: Convert to fraction form
    872,582.40/1,308,873.60 = 860,140.80/x
  3. Step 3: Cross multiply
    872,582.40x = 1,308,873.60 × 860,140.80
  4. Step 4: Simplify right side
    872,582.40x = 1,125,815,585,402.88
  5. Step 5: Solve for x
    x = 1,125,815,585,402.88/872,582.40
  6. Step 6: Final answer
    x = 1,290,211.20

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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.