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Finding the Fourth Proportional to 564,661.39, 780,765.45 and 555,535.12

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Solution

The fourth proportional to 564,661.39, 780,765.45 and 555,535.12 is: 768,146.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,661.39 : 780,765.45 = 555,535.12 : x
  2. Step 2: Convert to fraction form
    564,661.39/780,765.45 = 555,535.12/x
  3. Step 3: Cross multiply
    564,661.39x = 780,765.45 × 555,535.12
  4. Step 4: Simplify right side
    564,661.39x = 433,742,627,957.60
  5. Step 5: Solve for x
    x = 433,742,627,957.60/564,661.39
  6. Step 6: Final answer
    x = 768,146.42

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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.