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Finding the Fourth Proportional to 710,475.03, 980,443.92 and 388,178.19

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Solution

The fourth proportional to 710,475.03, 980,443.92 and 388,178.19 is: 535,679.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,475.03 : 980,443.92 = 388,178.19 : x
  2. Step 2: Convert to fraction form
    710,475.03/980,443.92 = 388,178.19/x
  3. Step 3: Cross multiply
    710,475.03x = 980,443.92 × 388,178.19
  4. Step 4: Simplify right side
    710,475.03x = 380,586,946,262.11
  5. Step 5: Solve for x
    x = 380,586,946,262.11/710,475.03
  6. Step 6: Final answer
    x = 535,679.55

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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.