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Finding the Fourth Proportional to 977,641.60, 1,466,462.40 and 859,446.40

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Solution

The fourth proportional to 977,641.60, 1,466,462.40 and 859,446.40 is: 1,289,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,641.60 : 1,466,462.40 = 859,446.40 : x
  2. Step 2: Convert to fraction form
    977,641.60/1,466,462.40 = 859,446.40/x
  3. Step 3: Cross multiply
    977,641.60x = 1,466,462.40 × 859,446.40
  4. Step 4: Simplify right side
    977,641.60x = 1,260,345,830,415.36
  5. Step 5: Solve for x
    x = 1,260,345,830,415.36/977,641.60
  6. Step 6: Final answer
    x = 1,289,169.60

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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.