Home / 817,078.92-1,127,108.42-490,307.40

Finding the Fourth Proportional to 817,078.92, 1,127,108.42 and 490,307.40

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Solution

The fourth proportional to 817,078.92, 1,127,108.42 and 490,307.40 is: 676,347.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,078.92 : 1,127,108.42 = 490,307.40 : x
  2. Step 2: Convert to fraction form
    817,078.92/1,127,108.42 = 490,307.40/x
  3. Step 3: Cross multiply
    817,078.92x = 1,127,108.42 × 490,307.40
  4. Step 4: Simplify right side
    817,078.92x = 552,629,598,928.31
  5. Step 5: Solve for x
    x = 552,629,598,928.31/817,078.92
  6. Step 6: Final answer
    x = 676,347.88

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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.