Home / 828,174,987.90-1,240,750,827.45-673,986,239.10

Finding the Fourth Proportional to 828,174,987.90, 1,240,750,827.45 and 673,986,239.10

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Solution

The fourth proportional to 828,174,987.90, 1,240,750,827.45 and 673,986,239.10 is: 1,009,749,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,174,987.90 : 1,240,750,827.45 = 673,986,239.10 : x
  2. Step 2: Convert to fraction form
    828,174,987.90/1,240,750,827.45 = 673,986,239.10/x
  3. Step 3: Cross multiply
    828,174,987.90x = 1,240,750,827.45 × 673,986,239.10
  4. Step 4: Simplify right side
    828,174,987.90x = 836,248,983,853,238,656
  5. Step 5: Solve for x
    x = 836,248,983,853,238,656/828,174,987.90
  6. Step 6: Final answer
    x = 1,009,749,142.48

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1.5x scale

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.