Home / 770,943.81-1,156,415.72-209,978.31

Finding the Fourth Proportional to 770,943.81, 1,156,415.72 and 209,978.31

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Solution

The fourth proportional to 770,943.81, 1,156,415.72 and 209,978.31 is: 314,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,943.81 : 1,156,415.72 = 209,978.31 : x
  2. Step 2: Convert to fraction form
    770,943.81/1,156,415.72 = 209,978.31/x
  3. Step 3: Cross multiply
    770,943.81x = 1,156,415.72 × 209,978.31
  4. Step 4: Simplify right side
    770,943.81x = 242,822,218,543.03
  5. Step 5: Solve for x
    x = 242,822,218,543.03/770,943.81
  6. Step 6: Final answer
    x = 314,967.47

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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.