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Finding the Fourth Proportional to 1,243,669.90, 1,865,504.85 and 973,065.10

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Solution

The fourth proportional to 1,243,669.90, 1,865,504.85 and 973,065.10 is: 1,459,597.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,669.90 : 1,865,504.85 = 973,065.10 : x
  2. Step 2: Convert to fraction form
    1,243,669.90/1,865,504.85 = 973,065.10/x
  3. Step 3: Cross multiply
    1,243,669.90x = 1,865,504.85 × 973,065.10
  4. Step 4: Simplify right side
    1,243,669.90x = 1,815,257,663,415.74
  5. Step 5: Solve for x
    x = 1,815,257,663,415.74/1,243,669.90
  6. Step 6: Final answer
    x = 1,459,597.65

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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.