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Finding the Fourth Proportional to 671,852.40, 927,121.32 and 417,198.12

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Solution

The fourth proportional to 671,852.40, 927,121.32 and 417,198.12 is: 575,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,852.40 : 927,121.32 = 417,198.12 : x
  2. Step 2: Convert to fraction form
    671,852.40/927,121.32 = 417,198.12/x
  3. Step 3: Cross multiply
    671,852.40x = 927,121.32 × 417,198.12
  4. Step 4: Simplify right side
    671,852.40x = 386,793,271,715.92
  5. Step 5: Solve for x
    x = 386,793,271,715.92/671,852.40
  6. Step 6: Final answer
    x = 575,711.68

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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.