Home / 656,829.19-906,423.78-355,023.19

Finding the Fourth Proportional to 656,829.19, 906,423.78 and 355,023.19

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Solution

The fourth proportional to 656,829.19, 906,423.78 and 355,023.19 is: 489,931.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,829.19 : 906,423.78 = 355,023.19 : x
  2. Step 2: Convert to fraction form
    656,829.19/906,423.78 = 355,023.19/x
  3. Step 3: Cross multiply
    656,829.19x = 906,423.78 × 355,023.19
  4. Step 4: Simplify right side
    656,829.19x = 321,801,461,867.46
  5. Step 5: Solve for x
    x = 321,801,461,867.46/656,829.19
  6. Step 6: Final answer
    x = 489,931.73

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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.