Home / 987,201.60-1,480,802.40-910,219.20

Finding the Fourth Proportional to 987,201.60, 1,480,802.40 and 910,219.20

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Solution

The fourth proportional to 987,201.60, 1,480,802.40 and 910,219.20 is: 1,365,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,201.60 : 1,480,802.40 = 910,219.20 : x
  2. Step 2: Convert to fraction form
    987,201.60/1,480,802.40 = 910,219.20/x
  3. Step 3: Cross multiply
    987,201.60x = 1,480,802.40 × 910,219.20
  4. Step 4: Simplify right side
    987,201.60x = 1,347,854,775,886.08
  5. Step 5: Solve for x
    x = 1,347,854,775,886.08/987,201.60
  6. Step 6: Final answer
    x = 1,365,328.80

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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.