Home / 745,507.70-1,028,663.97-439,679.78

Finding the Fourth Proportional to 745,507.70, 1,028,663.97 and 439,679.78

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Solution

The fourth proportional to 745,507.70, 1,028,663.97 and 439,679.78 is: 606,677.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,507.70 : 1,028,663.97 = 439,679.78 : x
  2. Step 2: Convert to fraction form
    745,507.70/1,028,663.97 = 439,679.78/x
  3. Step 3: Cross multiply
    745,507.70x = 1,028,663.97 × 439,679.78
  4. Step 4: Simplify right side
    745,507.70x = 452,282,748,946.39
  5. Step 5: Solve for x
    x = 452,282,748,946.39/745,507.70
  6. Step 6: Final answer
    x = 606,677.50

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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.