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Finding the Fourth Proportional to 473,811.71, 713,914.31 and 391,417.70

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Solution

The fourth proportional to 473,811.71, 713,914.31 and 391,417.70 is: 589,767.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,811.71 : 713,914.31 = 391,417.70 : x
  2. Step 2: Convert to fraction form
    473,811.71/713,914.31 = 391,417.70/x
  3. Step 3: Cross multiply
    473,811.71x = 713,914.31 × 391,417.70
  4. Step 4: Simplify right side
    473,811.71x = 279,438,695,260.20
  5. Step 5: Solve for x
    x = 279,438,695,260.20/473,811.71
  6. Step 6: Final answer
    x = 589,767.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.