Home / 916,342.08-1,264,615.20-513,960

Finding the Fourth Proportional to 916,342.08, 1,264,615.20 and 513,960

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Solution

The fourth proportional to 916,342.08, 1,264,615.20 and 513,960 is: 709,300.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,342.08 : 1,264,615.20 = 513,960 : x
  2. Step 2: Convert to fraction form
    916,342.08/1,264,615.20 = 513,960/x
  3. Step 3: Cross multiply
    916,342.08x = 1,264,615.20 × 513,960
  4. Step 4: Simplify right side
    916,342.08x = 649,961,628,192
  5. Step 5: Solve for x
    x = 649,961,628,192/916,342.08
  6. Step 6: Final answer
    x = 709,300.21

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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.