Home / 828,186.51-1,142,909.13-465,590.12

Finding the Fourth Proportional to 828,186.51, 1,142,909.13 and 465,590.12

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Solution

The fourth proportional to 828,186.51, 1,142,909.13 and 465,590.12 is: 642,520.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,186.51 : 1,142,909.13 = 465,590.12 : x
  2. Step 2: Convert to fraction form
    828,186.51/1,142,909.13 = 465,590.12/x
  3. Step 3: Cross multiply
    828,186.51x = 1,142,909.13 × 465,590.12
  4. Step 4: Simplify right side
    828,186.51x = 532,127,193,271.25
  5. Step 5: Solve for x
    x = 532,127,193,271.25/828,186.51
  6. Step 6: Final answer
    x = 642,520.96

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1.5x scale

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.