Home / 813,784.49-1,122,841.13-487,046.69

Finding the Fourth Proportional to 813,784.49, 1,122,841.13 and 487,046.69

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Solution

The fourth proportional to 813,784.49, 1,122,841.13 and 487,046.69 is: 672,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,784.49 : 1,122,841.13 = 487,046.69 : x
  2. Step 2: Convert to fraction form
    813,784.49/1,122,841.13 = 487,046.69/x
  3. Step 3: Cross multiply
    813,784.49x = 1,122,841.13 × 487,046.69
  4. Step 4: Simplify right side
    813,784.49x = 546,876,047,712.92
  5. Step 5: Solve for x
    x = 546,876,047,712.92/813,784.49
  6. Step 6: Final answer
    x = 672,015.82

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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.