Home / 672,345.35-927,869.49-378,087.69

Finding the Fourth Proportional to 672,345.35, 927,869.49 and 378,087.69

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Solution

The fourth proportional to 672,345.35, 927,869.49 and 378,087.69 is: 521,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,345.35 : 927,869.49 = 378,087.69 : x
  2. Step 2: Convert to fraction form
    672,345.35/927,869.49 = 378,087.69/x
  3. Step 3: Cross multiply
    672,345.35x = 927,869.49 × 378,087.69
  4. Step 4: Simplify right side
    672,345.35x = 350,816,032,095.58
  5. Step 5: Solve for x
    x = 350,816,032,095.58/672,345.35
  6. Step 6: Final answer
    x = 521,779.52

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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.