Home / 918,128.70-1,266,810.03-555,543.54

Finding the Fourth Proportional to 918,128.70, 1,266,810.03 and 555,543.54

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Solution

The fourth proportional to 918,128.70, 1,266,810.03 and 555,543.54 is: 766,524.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,128.70 : 1,266,810.03 = 555,543.54 : x
  2. Step 2: Convert to fraction form
    918,128.70/1,266,810.03 = 555,543.54/x
  3. Step 3: Cross multiply
    918,128.70x = 1,266,810.03 × 555,543.54
  4. Step 4: Simplify right side
    918,128.70x = 703,768,128,573.71
  5. Step 5: Solve for x
    x = 703,768,128,573.71/918,128.70
  6. Step 6: Final answer
    x = 766,524.48

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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.