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Finding the Fourth Proportional to 710,235.75, 980,119.53 and 387,945.93

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Solution

The fourth proportional to 710,235.75, 980,119.53 and 387,945.93 is: 535,362.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,235.75 : 980,119.53 = 387,945.93 : x
  2. Step 2: Convert to fraction form
    710,235.75/980,119.53 = 387,945.93/x
  3. Step 3: Cross multiply
    710,235.75x = 980,119.53 × 387,945.93
  4. Step 4: Simplify right side
    710,235.75x = 380,233,382,577.01
  5. Step 5: Solve for x
    x = 380,233,382,577.01/710,235.75
  6. Step 6: Final answer
    x = 535,362.21

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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.