Home / 426,352.68-639,417.64-126,752.58

Finding the Fourth Proportional to 426,352.68, 639,417.64 and 126,752.58

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Solution

The fourth proportional to 426,352.68, 639,417.64 and 126,752.58 is: 190,095.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,352.68 : 639,417.64 = 126,752.58 : x
  2. Step 2: Convert to fraction form
    426,352.68/639,417.64 = 126,752.58/x
  3. Step 3: Cross multiply
    426,352.68x = 639,417.64 × 126,752.58
  4. Step 4: Simplify right side
    426,352.68x = 81,047,835,567.51
  5. Step 5: Solve for x
    x = 81,047,835,567.51/426,352.68
  6. Step 6: Final answer
    x = 190,095.76

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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.