Home / 656,306.28-905,702.64-354,500.28

Finding the Fourth Proportional to 656,306.28, 905,702.64 and 354,500.28

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Solution

The fourth proportional to 656,306.28, 905,702.64 and 354,500.28 is: 489,210.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,306.28 : 905,702.64 = 354,500.28 : x
  2. Step 2: Convert to fraction form
    656,306.28/905,702.64 = 354,500.28/x
  3. Step 3: Cross multiply
    656,306.28x = 905,702.64 × 354,500.28
  4. Step 4: Simplify right side
    656,306.28x = 321,071,839,476.74
  5. Step 5: Solve for x
    x = 321,071,839,476.74/656,306.28
  6. Step 6: Final answer
    x = 489,210.37

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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.