Home / 717,914.48-990,709.24-391,230.40

Finding the Fourth Proportional to 717,914.48, 990,709.24 and 391,230.40

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Solution

The fourth proportional to 717,914.48, 990,709.24 and 391,230.40 is: 539,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,914.48 : 990,709.24 = 391,230.40 : x
  2. Step 2: Convert to fraction form
    717,914.48/990,709.24 = 391,230.40/x
  3. Step 3: Cross multiply
    717,914.48x = 990,709.24 × 391,230.40
  4. Step 4: Simplify right side
    717,914.48x = 387,595,572,248.90
  5. Step 5: Solve for x
    x = 387,595,572,248.90/717,914.48
  6. Step 6: Final answer
    x = 539,891.01

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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.