Home / 816,101.80-1,224,152.70-648,140.20

Finding the Fourth Proportional to 816,101.80, 1,224,152.70 and 648,140.20

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Solution

The fourth proportional to 816,101.80, 1,224,152.70 and 648,140.20 is: 972,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,101.80 : 1,224,152.70 = 648,140.20 : x
  2. Step 2: Convert to fraction form
    816,101.80/1,224,152.70 = 648,140.20/x
  3. Step 3: Cross multiply
    816,101.80x = 1,224,152.70 × 648,140.20
  4. Step 4: Simplify right side
    816,101.80x = 793,422,575,808.54
  5. Step 5: Solve for x
    x = 793,422,575,808.54/816,101.80
  6. Step 6: Final answer
    x = 972,210.30

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Double scale
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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.