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Finding the Fourth Proportional to 977,607.70, 1,466,411.55 and 660,346.90

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Solution

The fourth proportional to 977,607.70, 1,466,411.55 and 660,346.90 is: 990,520.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,607.70 : 1,466,411.55 = 660,346.90 : x
  2. Step 2: Convert to fraction form
    977,607.70/1,466,411.55 = 660,346.90/x
  3. Step 3: Cross multiply
    977,607.70x = 1,466,411.55 × 660,346.90
  4. Step 4: Simplify right side
    977,607.70x = 968,340,321,166.70
  5. Step 5: Solve for x
    x = 968,340,321,166.70/977,607.70
  6. Step 6: Final answer
    x = 990,520.35

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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.