Home / 807,520.40-1,209,968.40-760,281.20

Finding the Fourth Proportional to 807,520.40, 1,209,968.40 and 760,281.20

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Solution

The fourth proportional to 807,520.40, 1,209,968.40 and 760,281.20 is: 1,139,186.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,520.40 : 1,209,968.40 = 760,281.20 : x
  2. Step 2: Convert to fraction form
    807,520.40/1,209,968.40 = 760,281.20/x
  3. Step 3: Cross multiply
    807,520.40x = 1,209,968.40 × 760,281.20
  4. Step 4: Simplify right side
    807,520.40x = 919,916,227,114.08
  5. Step 5: Solve for x
    x = 919,916,227,114.08/807,520.40
  6. Step 6: Final answer
    x = 1,139,186.36

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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.