Home / 515,678.04-711,641.16-286,239.60

Finding the Fourth Proportional to 515,678.04, 711,641.16 and 286,239.60

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Solution

The fourth proportional to 515,678.04, 711,641.16 and 286,239.60 is: 395,013.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,678.04 : 711,641.16 = 286,239.60 : x
  2. Step 2: Convert to fraction form
    515,678.04/711,641.16 = 286,239.60/x
  3. Step 3: Cross multiply
    515,678.04x = 711,641.16 × 286,239.60
  4. Step 4: Simplify right side
    515,678.04x = 203,699,880,981.94
  5. Step 5: Solve for x
    x = 203,699,880,981.94/515,678.04
  6. Step 6: Final answer
    x = 395,013.68

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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.