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Finding the Fourth Proportional to 530,124.05, 732,012.66 and 491,659.58

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Solution

The fourth proportional to 530,124.05, 732,012.66 and 491,659.58 is: 678,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,124.05 : 732,012.66 = 491,659.58 : x
  2. Step 2: Convert to fraction form
    530,124.05/732,012.66 = 491,659.58/x
  3. Step 3: Cross multiply
    530,124.05x = 732,012.66 × 491,659.58
  4. Step 4: Simplify right side
    530,124.05x = 359,901,038,800.31
  5. Step 5: Solve for x
    x = 359,901,038,800.31/530,124.05
  6. Step 6: Final answer
    x = 678,899.66

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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.