Home / 717,444.14-990,117.78-395,154.15

Finding the Fourth Proportional to 717,444.14, 990,117.78 and 395,154.15

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Solution

The fourth proportional to 717,444.14, 990,117.78 and 395,154.15 is: 545,337.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,444.14 : 990,117.78 = 395,154.15 : x
  2. Step 2: Convert to fraction form
    717,444.14/990,117.78 = 395,154.15/x
  3. Step 3: Cross multiply
    717,444.14x = 990,117.78 × 395,154.15
  4. Step 4: Simplify right side
    717,444.14x = 391,249,144,561.02
  5. Step 5: Solve for x
    x = 391,249,144,561.02/717,444.14
  6. Step 6: Final answer
    x = 545,337.44

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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.