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Finding the Fourth Proportional to 519,667.28, 779,550.48 and 145,689.20

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Solution

The fourth proportional to 519,667.28, 779,550.48 and 145,689.20 is: 218,547.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,667.28 : 779,550.48 = 145,689.20 : x
  2. Step 2: Convert to fraction form
    519,667.28/779,550.48 = 145,689.20/x
  3. Step 3: Cross multiply
    519,667.28x = 779,550.48 × 145,689.20
  4. Step 4: Simplify right side
    519,667.28x = 113,572,085,790.82
  5. Step 5: Solve for x
    x = 113,572,085,790.82/519,667.28
  6. Step 6: Final answer
    x = 218,547.69

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1.5x scale

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.