Home / 634,208.76-875,235.42-379,510.92

Finding the Fourth Proportional to 634,208.76, 875,235.42 and 379,510.92

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Solution

The fourth proportional to 634,208.76, 875,235.42 and 379,510.92 is: 523,741.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,208.76 : 875,235.42 = 379,510.92 : x
  2. Step 2: Convert to fraction form
    634,208.76/875,235.42 = 379,510.92/x
  3. Step 3: Cross multiply
    634,208.76x = 875,235.42 × 379,510.92
  4. Step 4: Simplify right side
    634,208.76x = 332,161,399,460.79
  5. Step 5: Solve for x
    x = 332,161,399,460.79/634,208.76
  6. Step 6: Final answer
    x = 523,741.42

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Half scale
Find fourth proportional to 1,268,417.52, 1,750,470.84 and 759,021.84
Double scale
Find fourth proportional to 634,209.76, 875,236.80 and 379,511.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.