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Finding the Fourth Proportional to 977,680.80, 1,465,354.80 and 877,370.40

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Solution

The fourth proportional to 977,680.80, 1,465,354.80 and 877,370.40 is: 1,315,008.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,680.80 : 1,465,354.80 = 877,370.40 : x
  2. Step 2: Convert to fraction form
    977,680.80/1,465,354.80 = 877,370.40/x
  3. Step 3: Cross multiply
    977,680.80x = 1,465,354.80 × 877,370.40
  4. Step 4: Simplify right side
    977,680.80x = 1,285,658,927,017.92
  5. Step 5: Solve for x
    x = 1,285,658,927,017.92/977,680.80
  6. Step 6: Final answer
    x = 1,315,008.87

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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.