Home / 817,530.40-1,128,290.20-495,231.04

Finding the Fourth Proportional to 817,530.40, 1,128,290.20 and 495,231.04

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Solution

The fourth proportional to 817,530.40, 1,128,290.20 and 495,231.04 is: 683,478.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,530.40 : 1,128,290.20 = 495,231.04 : x
  2. Step 2: Convert to fraction form
    817,530.40/1,128,290.20 = 495,231.04/x
  3. Step 3: Cross multiply
    817,530.40x = 1,128,290.20 × 495,231.04
  4. Step 4: Simplify right side
    817,530.40x = 558,764,329,167.81
  5. Step 5: Solve for x
    x = 558,764,329,167.81/817,530.40
  6. Step 6: Final answer
    x = 683,478.35

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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.