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Finding the Fourth Proportional to 710,575.05, 980,581.68 and 388,277.72

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Solution

The fourth proportional to 710,575.05, 980,581.68 and 388,277.72 is: 535,816.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,575.05 : 980,581.68 = 388,277.72 : x
  2. Step 2: Convert to fraction form
    710,575.05/980,581.68 = 388,277.72/x
  3. Step 3: Cross multiply
    710,575.05x = 980,581.68 × 388,277.72
  4. Step 4: Simplify right side
    710,575.05x = 380,738,014,081.26
  5. Step 5: Solve for x
    x = 380,738,014,081.26/710,575.05
  6. Step 6: Final answer
    x = 535,816.75

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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.