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Finding the Fourth Proportional to 710,535.36, 980,606.88 and 388,294.32

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Solution

The fourth proportional to 710,535.36, 980,606.88 and 388,294.32 is: 535,883.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,535.36 : 980,606.88 = 388,294.32 : x
  2. Step 2: Convert to fraction form
    710,535.36/980,606.88 = 388,294.32/x
  3. Step 3: Cross multiply
    710,535.36x = 980,606.88 × 388,294.32
  4. Step 4: Simplify right side
    710,535.36x = 380,764,081,656.92
  5. Step 5: Solve for x
    x = 380,764,081,656.92/710,535.36
  6. Step 6: Final answer
    x = 535,883.37

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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.