Home / 830,380.16-1,145,928.12-467,808.36

Finding the Fourth Proportional to 830,380.16, 1,145,928.12 and 467,808.36

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Solution

The fourth proportional to 830,380.16, 1,145,928.12 and 467,808.36 is: 645,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,380.16 : 1,145,928.12 = 467,808.36 : x
  2. Step 2: Convert to fraction form
    830,380.16/1,145,928.12 = 467,808.36/x
  3. Step 3: Cross multiply
    830,380.16x = 1,145,928.12 × 467,808.36
  4. Step 4: Simplify right side
    830,380.16x = 536,074,754,495.08
  5. Step 5: Solve for x
    x = 536,074,754,495.08/830,380.16
  6. Step 6: Final answer
    x = 645,577.51

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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.