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Finding the Fourth Proportional to 710,579.82, 980,602.70 and 388,289.92

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Solution

The fourth proportional to 710,579.82, 980,602.70 and 388,289.92 is: 535,841.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,579.82 : 980,602.70 = 388,289.92 : x
  2. Step 2: Convert to fraction form
    710,579.82/980,602.70 = 388,289.92/x
  3. Step 3: Cross multiply
    710,579.82x = 980,602.70 × 388,289.92
  4. Step 4: Simplify right side
    710,579.82x = 380,758,143,934.78
  5. Step 5: Solve for x
    x = 380,758,143,934.78/710,579.82
  6. Step 6: Final answer
    x = 535,841.48

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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.