Home / 817,881.12-1,128,686.40-450,401.44

Finding the Fourth Proportional to 817,881.12, 1,128,686.40 and 450,401.44

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Solution

The fourth proportional to 817,881.12, 1,128,686.40 and 450,401.44 is: 621,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,881.12 : 1,128,686.40 = 450,401.44 : x
  2. Step 2: Convert to fraction form
    817,881.12/1,128,686.40 = 450,401.44/x
  3. Step 3: Cross multiply
    817,881.12x = 1,128,686.40 × 450,401.44
  4. Step 4: Simplify right side
    817,881.12x = 508,361,979,868.42
  5. Step 5: Solve for x
    x = 508,361,979,868.42/817,881.12
  6. Step 6: Final answer
    x = 621,559.74

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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.