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Finding the Fourth Proportional to 710,590.23, 980,616.97 and 388,300.34

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Solution

The fourth proportional to 710,590.23, 980,616.97 and 388,300.34 is: 535,855.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,590.23 : 980,616.97 = 388,300.34 : x
  2. Step 2: Convert to fraction form
    710,590.23/980,616.97 = 388,300.34/x
  3. Step 3: Cross multiply
    710,590.23x = 980,616.97 × 388,300.34
  4. Step 4: Simplify right side
    710,590.23x = 380,773,902,860.77
  5. Step 5: Solve for x
    x = 380,773,902,860.77/710,590.23
  6. Step 6: Final answer
    x = 535,855.81

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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.