Home / 878,437.28-1,212,373.32-556,177.40

Finding the Fourth Proportional to 878,437.28, 1,212,373.32 and 556,177.40

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Solution

The fourth proportional to 878,437.28, 1,212,373.32 and 556,177.40 is: 767,607.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,437.28 : 1,212,373.32 = 556,177.40 : x
  2. Step 2: Convert to fraction form
    878,437.28/1,212,373.32 = 556,177.40/x
  3. Step 3: Cross multiply
    878,437.28x = 1,212,373.32 × 556,177.40
  4. Step 4: Simplify right side
    878,437.28x = 674,294,640,946.97
  5. Step 5: Solve for x
    x = 674,294,640,946.97/878,437.28
  6. Step 6: Final answer
    x = 767,607.04

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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.