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Finding the Fourth Proportional to 608,489.40, 912,734.10 and 604,990.20

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Solution

The fourth proportional to 608,489.40, 912,734.10 and 604,990.20 is: 907,485.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,489.40 : 912,734.10 = 604,990.20 : x
  2. Step 2: Convert to fraction form
    608,489.40/912,734.10 = 604,990.20/x
  3. Step 3: Cross multiply
    608,489.40x = 912,734.10 × 604,990.20
  4. Step 4: Simplify right side
    608,489.40x = 552,195,185,705.82
  5. Step 5: Solve for x
    x = 552,195,185,705.82/608,489.40
  6. Step 6: Final answer
    x = 907,485.30

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Double scale
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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.