Home / 813,053.16-1,218,928.50-386,374.86

Finding the Fourth Proportional to 813,053.16, 1,218,928.50 and 386,374.86

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Solution

The fourth proportional to 813,053.16, 1,218,928.50 and 386,374.86 is: 579,252.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,053.16 : 1,218,928.50 = 386,374.86 : x
  2. Step 2: Convert to fraction form
    813,053.16/1,218,928.50 = 386,374.86/x
  3. Step 3: Cross multiply
    813,053.16x = 1,218,928.50 × 386,374.86
  4. Step 4: Simplify right side
    813,053.16x = 470,963,328,537.51
  5. Step 5: Solve for x
    x = 470,963,328,537.51/813,053.16
  6. Step 6: Final answer
    x = 579,252.81

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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.