Home / 714,225.17-985,591.47-391,909.82

Finding the Fourth Proportional to 714,225.17, 985,591.47 and 391,909.82

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Solution

The fourth proportional to 714,225.17, 985,591.47 and 391,909.82 is: 540,814.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,225.17 : 985,591.47 = 391,909.82 : x
  2. Step 2: Convert to fraction form
    714,225.17/985,591.47 = 391,909.82/x
  3. Step 3: Cross multiply
    714,225.17x = 985,591.47 × 391,909.82
  4. Step 4: Simplify right side
    714,225.17x = 386,262,975,601.24
  5. Step 5: Solve for x
    x = 386,262,975,601.24/714,225.17
  6. Step 6: Final answer
    x = 540,814.01

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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.