Home / 918,018.50-1,266,984.33-515,610.50

Finding the Fourth Proportional to 918,018.50, 1,266,984.33 and 515,610.50

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Solution

The fourth proportional to 918,018.50, 1,266,984.33 and 515,610.50 is: 711,609.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,018.50 : 1,266,984.33 = 515,610.50 : x
  2. Step 2: Convert to fraction form
    918,018.50/1,266,984.33 = 515,610.50/x
  3. Step 3: Cross multiply
    918,018.50x = 1,266,984.33 × 515,610.50
  4. Step 4: Simplify right side
    918,018.50x = 653,270,423,883.47
  5. Step 5: Solve for x
    x = 653,270,423,883.47/918,018.50
  6. Step 6: Final answer
    x = 711,609.21

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1.5x scale

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.