Home / 763,020-1,052,967.60-423,490.68

Finding the Fourth Proportional to 763,020, 1,052,967.60 and 423,490.68

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Solution

The fourth proportional to 763,020, 1,052,967.60 and 423,490.68 is: 584,417.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,020 : 1,052,967.60 = 423,490.68 : x
  2. Step 2: Convert to fraction form
    763,020/1,052,967.60 = 423,490.68/x
  3. Step 3: Cross multiply
    763,020x = 1,052,967.60 × 423,490.68
  4. Step 4: Simplify right side
    763,020x = 445,921,964,941.97
  5. Step 5: Solve for x
    x = 445,921,964,941.97/763,020
  6. Step 6: Final answer
    x = 584,417.14

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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.