Home / 1,389,615.34-1,917,232.04-777,670.87

Finding the Fourth Proportional to 1,389,615.34, 1,917,232.04 and 777,670.87

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Solution

The fourth proportional to 1,389,615.34, 1,917,232.04 and 777,670.87 is: 1,072,941.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,615.34 : 1,917,232.04 = 777,670.87 : x
  2. Step 2: Convert to fraction form
    1,389,615.34/1,917,232.04 = 777,670.87/x
  3. Step 3: Cross multiply
    1,389,615.34x = 1,917,232.04 × 777,670.87
  4. Step 4: Simplify right side
    1,389,615.34x = 1,490,975,495,064.16
  5. Step 5: Solve for x
    x = 1,490,975,495,064.16/1,389,615.34
  6. Step 6: Final answer
    x = 1,072,941.16

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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.