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Finding the Fourth Proportional to 710,148.68, 979,999.92 and 387,858.92

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Solution

The fourth proportional to 710,148.68, 979,999.92 and 387,858.92 is: 535,242.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,148.68 : 979,999.92 = 387,858.92 : x
  2. Step 2: Convert to fraction form
    710,148.68/979,999.92 = 387,858.92/x
  3. Step 3: Cross multiply
    710,148.68x = 979,999.92 × 387,858.92
  4. Step 4: Simplify right side
    710,148.68x = 380,101,710,571.29
  5. Step 5: Solve for x
    x = 380,101,710,571.29/710,148.68
  6. Step 6: Final answer
    x = 535,242.44

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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.