Home / 709,901.06-979,656.02-387,610.16

Finding the Fourth Proportional to 709,901.06, 979,656.02 and 387,610.16

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Solution

The fourth proportional to 709,901.06, 979,656.02 and 387,610.16 is: 534,897.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,901.06 : 979,656.02 = 387,610.16 : x
  2. Step 2: Convert to fraction form
    709,901.06/979,656.02 = 387,610.16/x
  3. Step 3: Cross multiply
    709,901.06x = 979,656.02 × 387,610.16
  4. Step 4: Simplify right side
    709,901.06x = 379,724,626,657.16
  5. Step 5: Solve for x
    x = 379,724,626,657.16/709,901.06
  6. Step 6: Final answer
    x = 534,897.96

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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.