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Finding the Fourth Proportional to 659,644.20, 989,466.30 and 589,660.20

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Solution

The fourth proportional to 659,644.20, 989,466.30 and 589,660.20 is: 884,490.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,644.20 : 989,466.30 = 589,660.20 : x
  2. Step 2: Convert to fraction form
    659,644.20/989,466.30 = 589,660.20/x
  3. Step 3: Cross multiply
    659,644.20x = 989,466.30 × 589,660.20
  4. Step 4: Simplify right side
    659,644.20x = 583,448,896,351.26
  5. Step 5: Solve for x
    x = 583,448,896,351.26/659,644.20
  6. Step 6: Final answer
    x = 884,490.30

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Half scale
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Double scale
Find fourth proportional to 659,645.20, 989,467.80 and 589,661.20
Similar ratio
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1.5x scale

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.