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Finding the Fourth Proportional to 710,592.45, 980,575.79 and 388,238.37

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Solution

The fourth proportional to 710,592.45, 980,575.79 and 388,238.37 is: 535,746.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,592.45 : 980,575.79 = 388,238.37 : x
  2. Step 2: Convert to fraction form
    710,592.45/980,575.79 = 388,238.37/x
  3. Step 3: Cross multiply
    710,592.45x = 980,575.79 × 388,238.37
  4. Step 4: Simplify right side
    710,592.45x = 380,697,144,429.87
  5. Step 5: Solve for x
    x = 380,697,144,429.87/710,592.45
  6. Step 6: Final answer
    x = 535,746.11

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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.