Home / 748,052,421.60-1,122,078,632.40-339,905,733.60

Finding the Fourth Proportional to 748,052,421.60, 1,122,078,632.40 and 339,905,733.60

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Solution

The fourth proportional to 748,052,421.60, 1,122,078,632.40 and 339,905,733.60 is: 509,858,600.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,052,421.60 : 1,122,078,632.40 = 339,905,733.60 : x
  2. Step 2: Convert to fraction form
    748,052,421.60/1,122,078,632.40 = 339,905,733.60/x
  3. Step 3: Cross multiply
    748,052,421.60x = 1,122,078,632.40 × 339,905,733.60
  4. Step 4: Simplify right side
    748,052,421.60x = 381,400,960,702,806,784
  5. Step 5: Solve for x
    x = 381,400,960,702,806,784/748,052,421.60
  6. Step 6: Final answer
    x = 509,858,600.40

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Double scale
Find fourth proportional to 748,052,422.60, 1,122,078,633.90 and 339,905,734.60
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.