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Finding the Fourth Proportional to 710,501.04, 980,505.60 and 388,231.20

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Solution

The fourth proportional to 710,501.04, 980,505.60 and 388,231.20 is: 535,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,501.04 : 980,505.60 = 388,231.20 : x
  2. Step 2: Convert to fraction form
    710,501.04/980,505.60 = 388,231.20/x
  3. Step 3: Cross multiply
    710,501.04x = 980,505.60 × 388,231.20
  4. Step 4: Simplify right side
    710,501.04x = 380,662,865,694.72
  5. Step 5: Solve for x
    x = 380,662,865,694.72/710,501.04
  6. Step 6: Final answer
    x = 535,766.80

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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.