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Finding the Fourth Proportional to 710,462.40, 980,452.21 and 388,192.49

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Solution

The fourth proportional to 710,462.40, 980,452.21 and 388,192.49 is: 535,713.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,462.40 : 980,452.21 = 388,192.49 : x
  2. Step 2: Convert to fraction form
    710,462.40/980,452.21 = 388,192.49/x
  3. Step 3: Cross multiply
    710,462.40x = 980,452.21 × 388,192.49
  4. Step 4: Simplify right side
    710,462.40x = 380,604,184,725.90
  5. Step 5: Solve for x
    x = 380,604,184,725.90/710,462.40
  6. Step 6: Final answer
    x = 535,713.34

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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.