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Finding the Fourth Proportional to 528,999.40, 793,499.10 and 502,755.40

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Solution

The fourth proportional to 528,999.40, 793,499.10 and 502,755.40 is: 754,133.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,999.40 : 793,499.10 = 502,755.40 : x
  2. Step 2: Convert to fraction form
    528,999.40/793,499.10 = 502,755.40/x
  3. Step 3: Cross multiply
    528,999.40x = 793,499.10 × 502,755.40
  4. Step 4: Simplify right side
    528,999.40x = 398,935,957,420.14
  5. Step 5: Solve for x
    x = 398,935,957,420.14/528,999.40
  6. Step 6: Final answer
    x = 754,133.10

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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.