Home / 872,438.40-1,308,657.60-788,457.60

Finding the Fourth Proportional to 872,438.40, 1,308,657.60 and 788,457.60

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Solution

The fourth proportional to 872,438.40, 1,308,657.60 and 788,457.60 is: 1,182,686.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,438.40 : 1,308,657.60 = 788,457.60 : x
  2. Step 2: Convert to fraction form
    872,438.40/1,308,657.60 = 788,457.60/x
  3. Step 3: Cross multiply
    872,438.40x = 1,308,657.60 × 788,457.60
  4. Step 4: Simplify right side
    872,438.40x = 1,031,821,030,517.76
  5. Step 5: Solve for x
    x = 1,031,821,030,517.76/872,438.40
  6. Step 6: Final answer
    x = 1,182,686.40

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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.