Home / 717,966.13-990,619.25-407,799.71

Finding the Fourth Proportional to 717,966.13, 990,619.25 and 407,799.71

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Solution

The fourth proportional to 717,966.13, 990,619.25 and 407,799.71 is: 562,664.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,966.13 : 990,619.25 = 407,799.71 : x
  2. Step 2: Convert to fraction form
    717,966.13/990,619.25 = 407,799.71/x
  3. Step 3: Cross multiply
    717,966.13x = 990,619.25 × 407,799.71
  4. Step 4: Simplify right side
    717,966.13x = 403,974,247,459.25
  5. Step 5: Solve for x
    x = 403,974,247,459.25/717,966.13
  6. Step 6: Final answer
    x = 562,664.77

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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.