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Finding the Fourth Proportional to 710,368.53, 980,376.12 and 388,127.04

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Solution

The fourth proportional to 710,368.53, 980,376.12 and 388,127.04 is: 535,652.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,368.53 : 980,376.12 = 388,127.04 : x
  2. Step 2: Convert to fraction form
    710,368.53/980,376.12 = 388,127.04/x
  3. Step 3: Cross multiply
    710,368.53x = 980,376.12 × 388,127.04
  4. Step 4: Simplify right side
    710,368.53x = 380,510,481,542.29
  5. Step 5: Solve for x
    x = 380,510,481,542.29/710,368.53
  6. Step 6: Final answer
    x = 535,652.22

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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.