Home / 830,142.88-1,238,335.70-805,670.35

Finding the Fourth Proportional to 830,142.88, 1,238,335.70 and 805,670.35

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Solution

The fourth proportional to 830,142.88, 1,238,335.70 and 805,670.35 is: 1,201,829.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,142.88 : 1,238,335.70 = 805,670.35 : x
  2. Step 2: Convert to fraction form
    830,142.88/1,238,335.70 = 805,670.35/x
  3. Step 3: Cross multiply
    830,142.88x = 1,238,335.70 × 805,670.35
  4. Step 4: Simplify right side
    830,142.88x = 997,690,349,712.30
  5. Step 5: Solve for x
    x = 997,690,349,712.30/830,142.88
  6. Step 6: Final answer
    x = 1,201,829.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.