Home / 515,681.04-711,645.30-286,242.60

Finding the Fourth Proportional to 515,681.04, 711,645.30 and 286,242.60

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Solution

The fourth proportional to 515,681.04, 711,645.30 and 286,242.60 is: 395,017.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,681.04 : 711,645.30 = 286,242.60 : x
  2. Step 2: Convert to fraction form
    515,681.04/711,645.30 = 286,242.60/x
  3. Step 3: Cross multiply
    515,681.04x = 711,645.30 × 286,242.60
  4. Step 4: Simplify right side
    515,681.04x = 203,703,200,949.78
  5. Step 5: Solve for x
    x = 203,703,200,949.78/515,681.04
  6. Step 6: Final answer
    x = 395,017.82

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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.