Home / 515,715.24-711,675.78-286,259.04

Finding the Fourth Proportional to 515,715.24, 711,675.78 and 286,259.04

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Solution

The fourth proportional to 515,715.24, 711,675.78 and 286,259.04 is: 395,031.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,715.24 : 711,675.78 = 286,259.04 : x
  2. Step 2: Convert to fraction form
    515,715.24/711,675.78 = 286,259.04/x
  3. Step 3: Cross multiply
    515,715.24x = 711,675.78 × 286,259.04
  4. Step 4: Simplify right side
    515,715.24x = 203,723,625,574.05
  5. Step 5: Solve for x
    x = 203,723,625,574.05/515,715.24
  6. Step 6: Final answer
    x = 395,031.23

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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.