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Finding the Fourth Proportional to 710,476.03, 980,445.30 and 388,179.19

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Solution

The fourth proportional to 710,476.03, 980,445.30 and 388,179.19 is: 535,680.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,476.03 : 980,445.30 = 388,179.19 : x
  2. Step 2: Convert to fraction form
    710,476.03/980,445.30 = 388,179.19/x
  3. Step 3: Cross multiply
    710,476.03x = 980,445.30 × 388,179.19
  4. Step 4: Simplify right side
    710,476.03x = 380,588,462,393.31
  5. Step 5: Solve for x
    x = 380,588,462,393.31/710,476.03
  6. Step 6: Final answer
    x = 535,680.93

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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.