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Finding the Fourth Proportional to 530,283, 731,790.66 and 291,819

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Solution

The fourth proportional to 530,283, 731,790.66 and 291,819 is: 402,710.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,283 : 731,790.66 = 291,819 : x
  2. Step 2: Convert to fraction form
    530,283/731,790.66 = 291,819/x
  3. Step 3: Cross multiply
    530,283x = 731,790.66 × 291,819
  4. Step 4: Simplify right side
    530,283x = 213,550,418,610.54
  5. Step 5: Solve for x
    x = 213,550,418,610.54/530,283
  6. Step 6: Final answer
    x = 402,710.29

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1.5x scale

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.