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Finding the Fourth Proportional to 578,039.70, 867,059.55 and 554,420.10

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Solution

The fourth proportional to 578,039.70, 867,059.55 and 554,420.10 is: 831,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,039.70 : 867,059.55 = 554,420.10 : x
  2. Step 2: Convert to fraction form
    578,039.70/867,059.55 = 554,420.10/x
  3. Step 3: Cross multiply
    578,039.70x = 867,059.55 × 554,420.10
  4. Step 4: Simplify right side
    578,039.70x = 480,715,242,416.96
  5. Step 5: Solve for x
    x = 480,715,242,416.96/578,039.70
  6. Step 6: Final answer
    x = 831,630.15

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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.