Home / 714,293.51-985,721.94-392,008.82

Finding the Fourth Proportional to 714,293.51, 985,721.94 and 392,008.82

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Solution

The fourth proportional to 714,293.51, 985,721.94 and 392,008.82 is: 540,970.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,293.51 : 985,721.94 = 392,008.82 : x
  2. Step 2: Convert to fraction form
    714,293.51/985,721.94 = 392,008.82/x
  3. Step 3: Cross multiply
    714,293.51x = 985,721.94 × 392,008.82
  4. Step 4: Simplify right side
    714,293.51x = 386,411,689,618.90
  5. Step 5: Solve for x
    x = 386,411,689,618.90/714,293.51
  6. Step 6: Final answer
    x = 540,970.47

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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.