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Finding the Fourth Proportional to 1,652,973.60, 2,480,918.40 and 978,211.20

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Solution

The fourth proportional to 1,652,973.60, 2,480,918.40 and 978,211.20 is: 1,468,179.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652,973.60 : 2,480,918.40 = 978,211.20 : x
  2. Step 2: Convert to fraction form
    1,652,973.60/2,480,918.40 = 978,211.20/x
  3. Step 3: Cross multiply
    1,652,973.60x = 2,480,918.40 × 978,211.20
  4. Step 4: Simplify right side
    1,652,973.60x = 2,426,862,165,166.08
  5. Step 5: Solve for x
    x = 2,426,862,165,166.08/1,652,973.60
  6. Step 6: Final answer
    x = 1,468,179.63

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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.