Home / 878,752.76-1,212,621.59-491,501.07

Finding the Fourth Proportional to 878,752.76, 1,212,621.59 and 491,501.07

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Solution

The fourth proportional to 878,752.76, 1,212,621.59 and 491,501.07 is: 678,239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,752.76 : 1,212,621.59 = 491,501.07 : x
  2. Step 2: Convert to fraction form
    878,752.76/1,212,621.59 = 491,501.07/x
  3. Step 3: Cross multiply
    878,752.76x = 1,212,621.59 × 491,501.07
  4. Step 4: Simplify right side
    878,752.76x = 596,004,806,532.60
  5. Step 5: Solve for x
    x = 596,004,806,532.60/878,752.76
  6. Step 6: Final answer
    x = 678,239.47

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Double scale
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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.