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Finding the Fourth Proportional to 777,350.89, 1,163,392.71 and 478,021.06

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Solution

The fourth proportional to 777,350.89, 1,163,392.71 and 478,021.06 is: 715,412.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,350.89 : 1,163,392.71 = 478,021.06 : x
  2. Step 2: Convert to fraction form
    777,350.89/1,163,392.71 = 478,021.06/x
  3. Step 3: Cross multiply
    777,350.89x = 1,163,392.71 × 478,021.06
  4. Step 4: Simplify right side
    777,350.89x = 556,126,216,430.47
  5. Step 5: Solve for x
    x = 556,126,216,430.47/777,350.89
  6. Step 6: Final answer
    x = 715,412.08

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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.