Home / 878,860.71-1,212,918.20-534,721.08

Finding the Fourth Proportional to 878,860.71, 1,212,918.20 and 534,721.08

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Solution

The fourth proportional to 878,860.71, 1,212,918.20 and 534,721.08 is: 737,970.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,860.71 : 1,212,918.20 = 534,721.08 : x
  2. Step 2: Convert to fraction form
    878,860.71/1,212,918.20 = 534,721.08/x
  3. Step 3: Cross multiply
    878,860.71x = 1,212,918.20 × 534,721.08
  4. Step 4: Simplify right side
    878,860.71x = 648,572,927,182.05
  5. Step 5: Solve for x
    x = 648,572,927,182.05/878,860.71
  6. Step 6: Final answer
    x = 737,970.10

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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.