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Finding the Fourth Proportional to 710,476.02, 980,445.32 and 388,179.18

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Solution

The fourth proportional to 710,476.02, 980,445.32 and 388,179.18 is: 535,680.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,476.02 : 980,445.32 = 388,179.18 : x
  2. Step 2: Convert to fraction form
    710,476.02/980,445.32 = 388,179.18/x
  3. Step 3: Cross multiply
    710,476.02x = 980,445.32 × 388,179.18
  4. Step 4: Simplify right side
    710,476.02x = 380,588,460,352.44
  5. Step 5: Solve for x
    x = 380,588,460,352.44/710,476.02
  6. Step 6: Final answer
    x = 535,680.94

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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.