Home / 1,287,386.52-1,931,081.40-445,938.18

Finding the Fourth Proportional to 1,287,386.52, 1,931,081.40 and 445,938.18

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Solution

The fourth proportional to 1,287,386.52, 1,931,081.40 and 445,938.18 is: 668,907.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,386.52 : 1,931,081.40 = 445,938.18 : x
  2. Step 2: Convert to fraction form
    1,287,386.52/1,931,081.40 = 445,938.18/x
  3. Step 3: Cross multiply
    1,287,386.52x = 1,931,081.40 × 445,938.18
  4. Step 4: Simplify right side
    1,287,386.52x = 861,142,924,947.85
  5. Step 5: Solve for x
    x = 861,142,924,947.85/1,287,386.52
  6. Step 6: Final answer
    x = 668,907.83

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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.