Home / 763,811.03-1,053,194.40-487,806.17

Finding the Fourth Proportional to 763,811.03, 1,053,194.40 and 487,806.17

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Solution

The fourth proportional to 763,811.03, 1,053,194.40 and 487,806.17 is: 672,620.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,811.03 : 1,053,194.40 = 487,806.17 : x
  2. Step 2: Convert to fraction form
    763,811.03/1,053,194.40 = 487,806.17/x
  3. Step 3: Cross multiply
    763,811.03x = 1,053,194.40 × 487,806.17
  4. Step 4: Simplify right side
    763,811.03x = 513,754,721,263.48
  5. Step 5: Solve for x
    x = 513,754,721,263.48/763,811.03
  6. Step 6: Final answer
    x = 672,620.19

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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.