Home / 714,239.90-985,663.16-391,979.98

Finding the Fourth Proportional to 714,239.90, 985,663.16 and 391,979.98

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Solution

The fourth proportional to 714,239.90, 985,663.16 and 391,979.98 is: 540,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,239.90 : 985,663.16 = 391,979.98 : x
  2. Step 2: Convert to fraction form
    714,239.90/985,663.16 = 391,979.98/x
  3. Step 3: Cross multiply
    714,239.90x = 985,663.16 × 391,979.98
  4. Step 4: Simplify right side
    714,239.90x = 386,360,225,743.54
  5. Step 5: Solve for x
    x = 386,360,225,743.54/714,239.90
  6. Step 6: Final answer
    x = 540,939.01

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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.