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Finding the Fourth Proportional to 622,020.80, 931,864.80 and 580,030.40

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Solution

The fourth proportional to 622,020.80, 931,864.80 and 580,030.40 is: 868,957.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,020.80 : 931,864.80 = 580,030.40 : x
  2. Step 2: Convert to fraction form
    622,020.80/931,864.80 = 580,030.40/x
  3. Step 3: Cross multiply
    622,020.80x = 931,864.80 × 580,030.40
  4. Step 4: Simplify right side
    622,020.80x = 540,509,912,689.92
  5. Step 5: Solve for x
    x = 540,509,912,689.92/622,020.80
  6. Step 6: Final answer
    x = 868,957.94

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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.