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Finding the Fourth Proportional to 657,490.40, 986,235.60 and 551,202.20

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Solution

The fourth proportional to 657,490.40, 986,235.60 and 551,202.20 is: 826,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,490.40 : 986,235.60 = 551,202.20 : x
  2. Step 2: Convert to fraction form
    657,490.40/986,235.60 = 551,202.20/x
  3. Step 3: Cross multiply
    657,490.40x = 986,235.60 × 551,202.20
  4. Step 4: Simplify right side
    657,490.40x = 543,615,232,438.32
  5. Step 5: Solve for x
    x = 543,615,232,438.32/657,490.40
  6. Step 6: Final answer
    x = 826,803.30

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Double scale
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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.