Home / 817,486.40-1,128,229.44-495,187.04

Finding the Fourth Proportional to 817,486.40, 1,128,229.44 and 495,187.04

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Solution

The fourth proportional to 817,486.40, 1,128,229.44 and 495,187.04 is: 683,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,486.40 : 1,128,229.44 = 495,187.04 : x
  2. Step 2: Convert to fraction form
    817,486.40/1,128,229.44 = 495,187.04/x
  3. Step 3: Cross multiply
    817,486.40x = 1,128,229.44 × 495,187.04
  4. Step 4: Simplify right side
    817,486.40x = 558,684,596,834.46
  5. Step 5: Solve for x
    x = 558,684,596,834.46/817,486.40
  6. Step 6: Final answer
    x = 683,417.60

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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.