Home / 1,128,155.54-1,692,239.07-380,208.02

Finding the Fourth Proportional to 1,128,155.54, 1,692,239.07 and 380,208.02

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Solution

The fourth proportional to 1,128,155.54, 1,692,239.07 and 380,208.02 is: 570,313.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,155.54 : 1,692,239.07 = 380,208.02 : x
  2. Step 2: Convert to fraction form
    1,128,155.54/1,692,239.07 = 380,208.02/x
  3. Step 3: Cross multiply
    1,128,155.54x = 1,692,239.07 × 380,208.02
  4. Step 4: Simplify right side
    1,128,155.54x = 643,402,866,171.34
  5. Step 5: Solve for x
    x = 643,402,866,171.34/1,128,155.54
  6. Step 6: Final answer
    x = 570,313.97

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1.5x scale

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.