Home / 917,619.20-1,376,428.80-782,316.80

Finding the Fourth Proportional to 917,619.20, 1,376,428.80 and 782,316.80

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Solution

The fourth proportional to 917,619.20, 1,376,428.80 and 782,316.80 is: 1,173,475.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,619.20 : 1,376,428.80 = 782,316.80 : x
  2. Step 2: Convert to fraction form
    917,619.20/1,376,428.80 = 782,316.80/x
  3. Step 3: Cross multiply
    917,619.20x = 1,376,428.80 × 782,316.80
  4. Step 4: Simplify right side
    917,619.20x = 1,076,803,374,243.84
  5. Step 5: Solve for x
    x = 1,076,803,374,243.84/917,619.20
  6. Step 6: Final answer
    x = 1,173,475.20

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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.