Home / 656,834.81-906,277.50-398,705.40

Finding the Fourth Proportional to 656,834.81, 906,277.50 and 398,705.40

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Solution

The fourth proportional to 656,834.81, 906,277.50 and 398,705.40 is: 550,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,834.81 : 906,277.50 = 398,705.40 : x
  2. Step 2: Convert to fraction form
    656,834.81/906,277.50 = 398,705.40/x
  3. Step 3: Cross multiply
    656,834.81x = 906,277.50 × 398,705.40
  4. Step 4: Simplify right side
    656,834.81x = 361,337,733,148.50
  5. Step 5: Solve for x
    x = 361,337,733,148.50/656,834.81
  6. Step 6: Final answer
    x = 550,119.65

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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.