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Finding the Fourth Proportional to 1,317,309.90, 1,974,798.45 and 868,245.90

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Solution

The fourth proportional to 1,317,309.90, 1,974,798.45 and 868,245.90 is: 1,301,600.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,309.90 : 1,974,798.45 = 868,245.90 : x
  2. Step 2: Convert to fraction form
    1,317,309.90/1,974,798.45 = 868,245.90/x
  3. Step 3: Cross multiply
    1,317,309.90x = 1,974,798.45 × 868,245.90
  4. Step 4: Simplify right side
    1,317,309.90x = 1,714,610,657,538.86
  5. Step 5: Solve for x
    x = 1,714,610,657,538.86/1,317,309.90
  6. Step 6: Final answer
    x = 1,301,600.07

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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.