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Finding the Fourth Proportional to 1,015,730, 1,401,707.40 and 563,090

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Solution

The fourth proportional to 1,015,730, 1,401,707.40 and 563,090 is: 777,064.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,730 : 1,401,707.40 = 563,090 : x
  2. Step 2: Convert to fraction form
    1,015,730/1,401,707.40 = 563,090/x
  3. Step 3: Cross multiply
    1,015,730x = 1,401,707.40 × 563,090
  4. Step 4: Simplify right side
    1,015,730x = 789,287,419,866
  5. Step 5: Solve for x
    x = 789,287,419,866/1,015,730
  6. Step 6: Final answer
    x = 777,064.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.