Home / 638,979.09-881,776.93-352,499.10

Finding the Fourth Proportional to 638,979.09, 881,776.93 and 352,499.10

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Solution

The fourth proportional to 638,979.09, 881,776.93 and 352,499.10 is: 486,440.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,979.09 : 881,776.93 = 352,499.10 : x
  2. Step 2: Convert to fraction form
    638,979.09/881,776.93 = 352,499.10/x
  3. Step 3: Cross multiply
    638,979.09x = 881,776.93 × 352,499.10
  4. Step 4: Simplify right side
    638,979.09x = 310,825,574,225.76
  5. Step 5: Solve for x
    x = 310,825,574,225.76/638,979.09
  6. Step 6: Final answer
    x = 486,440.92

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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.