Home / 612,282.72-917,985.16-287,889.26

Finding the Fourth Proportional to 612,282.72, 917,985.16 and 287,889.26

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Solution

The fourth proportional to 612,282.72, 917,985.16 and 287,889.26 is: 431,627.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,282.72 : 917,985.16 = 287,889.26 : x
  2. Step 2: Convert to fraction form
    612,282.72/917,985.16 = 287,889.26/x
  3. Step 3: Cross multiply
    612,282.72x = 917,985.16 × 287,889.26
  4. Step 4: Simplify right side
    612,282.72x = 264,278,068,403.38
  5. Step 5: Solve for x
    x = 264,278,068,403.38/612,282.72
  6. Step 6: Final answer
    x = 431,627.51

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1.5x scale

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.