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Finding the Fourth Proportional to 777,905.40, 1,166,858.10 and 730,666.20

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Solution

The fourth proportional to 777,905.40, 1,166,858.10 and 730,666.20 is: 1,095,999.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,905.40 : 1,166,858.10 = 730,666.20 : x
  2. Step 2: Convert to fraction form
    777,905.40/1,166,858.10 = 730,666.20/x
  3. Step 3: Cross multiply
    777,905.40x = 1,166,858.10 × 730,666.20
  4. Step 4: Simplify right side
    777,905.40x = 852,583,773,866.22
  5. Step 5: Solve for x
    x = 852,583,773,866.22/777,905.40
  6. Step 6: Final answer
    x = 1,095,999.30

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1.5x scale

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.