Home / 878,483.79-1,212,437.66-556,223.79

Finding the Fourth Proportional to 878,483.79, 1,212,437.66 and 556,223.79

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Solution

The fourth proportional to 878,483.79, 1,212,437.66 and 556,223.79 is: 767,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,483.79 : 1,212,437.66 = 556,223.79 : x
  2. Step 2: Convert to fraction form
    878,483.79/1,212,437.66 = 556,223.79/x
  3. Step 3: Cross multiply
    878,483.79x = 1,212,437.66 × 556,223.79
  4. Step 4: Simplify right side
    878,483.79x = 674,386,667,602.81
  5. Step 5: Solve for x
    x = 674,386,667,602.81/878,483.79
  6. Step 6: Final answer
    x = 767,671.16

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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.