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Finding the Fourth Proportional to 530,153.49, 732,053.27 and 491,689.02

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Solution

The fourth proportional to 530,153.49, 732,053.27 and 491,689.02 is: 678,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,153.49 : 732,053.27 = 491,689.02 : x
  2. Step 2: Convert to fraction form
    530,153.49/732,053.27 = 491,689.02/x
  3. Step 3: Cross multiply
    530,153.49x = 732,053.27 × 491,689.02
  4. Step 4: Simplify right side
    530,153.49x = 359,942,554,914.10
  5. Step 5: Solve for x
    x = 359,942,554,914.10/530,153.49
  6. Step 6: Final answer
    x = 678,940.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.