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Finding the Fourth Proportional to 977,662.80, 1,465,327.80 and 877,352.40

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Solution

The fourth proportional to 977,662.80, 1,465,327.80 and 877,352.40 is: 1,314,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,662.80 : 1,465,327.80 = 877,352.40 : x
  2. Step 2: Convert to fraction form
    977,662.80/1,465,327.80 = 877,352.40/x
  3. Step 3: Cross multiply
    977,662.80x = 1,465,327.80 × 877,352.40
  4. Step 4: Simplify right side
    977,662.80x = 1,285,608,862,116.72
  5. Step 5: Solve for x
    x = 1,285,608,862,116.72/977,662.80
  6. Step 6: Final answer
    x = 1,314,981.88

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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.