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Finding the Fourth Proportional to 507,715.44, 761,573.16 and 258,572.40

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Solution

The fourth proportional to 507,715.44, 761,573.16 and 258,572.40 is: 387,858.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,715.44 : 761,573.16 = 258,572.40 : x
  2. Step 2: Convert to fraction form
    507,715.44/761,573.16 = 258,572.40/x
  3. Step 3: Cross multiply
    507,715.44x = 761,573.16 × 258,572.40
  4. Step 4: Simplify right side
    507,715.44x = 196,921,799,756.78
  5. Step 5: Solve for x
    x = 196,921,799,756.78/507,715.44
  6. Step 6: Final answer
    x = 387,858.60

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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.