Home / 1,021,043.52-1,531,564.80-390,021.12

Finding the Fourth Proportional to 1,021,043.52, 1,531,564.80 and 390,021.12

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Solution

The fourth proportional to 1,021,043.52, 1,531,564.80 and 390,021.12 is: 585,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,043.52 : 1,531,564.80 = 390,021.12 : x
  2. Step 2: Convert to fraction form
    1,021,043.52/1,531,564.80 = 390,021.12/x
  3. Step 3: Cross multiply
    1,021,043.52x = 1,531,564.80 × 390,021.12
  4. Step 4: Simplify right side
    1,021,043.52x = 597,342,618,648.58
  5. Step 5: Solve for x
    x = 597,342,618,648.58/1,021,043.52
  6. Step 6: Final answer
    x = 585,031.50

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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.