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Finding the Fourth Proportional to 710,537.91, 980,513.40 and 388,259.16

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Solution

The fourth proportional to 710,537.91, 980,513.40 and 388,259.16 is: 535,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,537.91 : 980,513.40 = 388,259.16 : x
  2. Step 2: Convert to fraction form
    710,537.91/980,513.40 = 388,259.16/x
  3. Step 3: Cross multiply
    710,537.91x = 980,513.40 × 388,259.16
  4. Step 4: Simplify right side
    710,537.91x = 380,693,309,052.74
  5. Step 5: Solve for x
    x = 380,693,309,052.74/710,537.91
  6. Step 6: Final answer
    x = 535,781.84

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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.