Home / 786,023.84-1,178,920.92-386,557.40

Finding the Fourth Proportional to 786,023.84, 1,178,920.92 and 386,557.40

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Solution

The fourth proportional to 786,023.84, 1,178,920.92 and 386,557.40 is: 579,779.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,023.84 : 1,178,920.92 = 386,557.40 : x
  2. Step 2: Convert to fraction form
    786,023.84/1,178,920.92 = 386,557.40/x
  3. Step 3: Cross multiply
    786,023.84x = 1,178,920.92 × 386,557.40
  4. Step 4: Simplify right side
    786,023.84x = 455,720,605,640.81
  5. Step 5: Solve for x
    x = 455,720,605,640.81/786,023.84
  6. Step 6: Final answer
    x = 579,779.62

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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.