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Finding the Fourth Proportional to 710,439.46, 980,420.56 and 388,169.52

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Solution

The fourth proportional to 710,439.46, 980,420.56 and 388,169.52 is: 535,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,439.46 : 980,420.56 = 388,169.52 : x
  2. Step 2: Convert to fraction form
    710,439.46/980,420.56 = 388,169.52/x
  3. Step 3: Cross multiply
    710,439.46x = 980,420.56 × 388,169.52
  4. Step 4: Simplify right side
    710,439.46x = 380,569,373,526.33
  5. Step 5: Solve for x
    x = 380,569,373,526.33/710,439.46
  6. Step 6: Final answer
    x = 535,681.64

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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.