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Finding the Fourth Proportional to 553,561.70, 830,342.55 and 548,312.90

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Solution

The fourth proportional to 553,561.70, 830,342.55 and 548,312.90 is: 822,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,561.70 : 830,342.55 = 548,312.90 : x
  2. Step 2: Convert to fraction form
    553,561.70/830,342.55 = 548,312.90/x
  3. Step 3: Cross multiply
    553,561.70x = 830,342.55 × 548,312.90
  4. Step 4: Simplify right side
    553,561.70x = 455,287,531,583.90
  5. Step 5: Solve for x
    x = 455,287,531,583.90/553,561.70
  6. Step 6: Final answer
    x = 822,469.35

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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.