Home / 634,860.76-876,121.23-348,378.34

Finding the Fourth Proportional to 634,860.76, 876,121.23 and 348,378.34

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Solution

The fourth proportional to 634,860.76, 876,121.23 and 348,378.34 is: 480,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,860.76 : 876,121.23 = 348,378.34 : x
  2. Step 2: Convert to fraction form
    634,860.76/876,121.23 = 348,378.34/x
  3. Step 3: Cross multiply
    634,860.76x = 876,121.23 × 348,378.34
  4. Step 4: Simplify right side
    634,860.76x = 305,221,659,746.16
  5. Step 5: Solve for x
    x = 305,221,659,746.16/634,860.76
  6. Step 6: Final answer
    x = 480,769.45

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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.