Home / 745,461.78-1,028,780.54-561,370.78

Finding the Fourth Proportional to 745,461.78, 1,028,780.54 and 561,370.78

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Solution

The fourth proportional to 745,461.78, 1,028,780.54 and 561,370.78 is: 774,724.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,461.78 : 1,028,780.54 = 561,370.78 : x
  2. Step 2: Convert to fraction form
    745,461.78/1,028,780.54 = 561,370.78/x
  3. Step 3: Cross multiply
    745,461.78x = 1,028,780.54 × 561,370.78
  4. Step 4: Simplify right side
    745,461.78x = 577,527,334,188.62
  5. Step 5: Solve for x
    x = 577,527,334,188.62/745,461.78
  6. Step 6: Final answer
    x = 774,724.27

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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.