Home / 1,500,031.40-2,070,048.81-811,703.26

Finding the Fourth Proportional to 1,500,031.40, 2,070,048.81 and 811,703.26

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Solution

The fourth proportional to 1,500,031.40, 2,070,048.81 and 811,703.26 is: 1,120,153.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,500,031.40 : 2,070,048.81 = 811,703.26 : x
  2. Step 2: Convert to fraction form
    1,500,031.40/2,070,048.81 = 811,703.26/x
  3. Step 3: Cross multiply
    1,500,031.40x = 2,070,048.81 × 811,703.26
  4. Step 4: Simplify right side
    1,500,031.40x = 1,680,265,373,067.57
  5. Step 5: Solve for x
    x = 1,680,265,373,067.57/1,500,031.40
  6. Step 6: Final answer
    x = 1,120,153.47

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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.