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Finding the Fourth Proportional to 559,072.70, 838,609.05 and 525,830.30

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Solution

The fourth proportional to 559,072.70, 838,609.05 and 525,830.30 is: 788,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,072.70 : 838,609.05 = 525,830.30 : x
  2. Step 2: Convert to fraction form
    559,072.70/838,609.05 = 525,830.30/x
  3. Step 3: Cross multiply
    559,072.70x = 838,609.05 × 525,830.30
  4. Step 4: Simplify right side
    559,072.70x = 440,966,048,344.22
  5. Step 5: Solve for x
    x = 440,966,048,344.22/559,072.70
  6. Step 6: Final answer
    x = 788,745.45

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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.