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Finding the Fourth Proportional to 553,668.55, 775,660.85 and 553,668.55

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Solution

The fourth proportional to 553,668.55, 775,660.85 and 553,668.55 is: 775,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,668.55 : 775,660.85 = 553,668.55 : x
  2. Step 2: Convert to fraction form
    553,668.55/775,660.85 = 553,668.55/x
  3. Step 3: Cross multiply
    553,668.55x = 775,660.85 × 553,668.55
  4. Step 4: Simplify right side
    553,668.55x = 429,459,018,111.27
  5. Step 5: Solve for x
    x = 429,459,018,111.27/553,668.55
  6. Step 6: Final answer
    x = 775,660.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.