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Finding the Fourth Proportional to 710,460.77, 980,424.27 and 388,163.93

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Solution

The fourth proportional to 710,460.77, 980,424.27 and 388,163.93 is: 535,659.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,460.77 : 980,424.27 = 388,163.93 : x
  2. Step 2: Convert to fraction form
    710,460.77/980,424.27 = 388,163.93/x
  3. Step 3: Cross multiply
    710,460.77x = 980,424.27 × 388,163.93
  4. Step 4: Simplify right side
    710,460.77x = 380,565,332,808.46
  5. Step 5: Solve for x
    x = 380,565,332,808.46/710,460.77
  6. Step 6: Final answer
    x = 535,659.89

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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.