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Finding the Fourth Proportional to 619,739,945.40, 929,609,918.10 and 619,739,945.40

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Solution

The fourth proportional to 619,739,945.40, 929,609,918.10 and 619,739,945.40 is: 929,609,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,739,945.40 : 929,609,918.10 = 619,739,945.40 : x
  2. Step 2: Convert to fraction form
    619,739,945.40/929,609,918.10 = 619,739,945.40/x
  3. Step 3: Cross multiply
    619,739,945.40x = 929,609,918.10 × 619,739,945.40
  4. Step 4: Simplify right side
    619,739,945.40x = 576,116,399,886,592,448
  5. Step 5: Solve for x
    x = 576,116,399,886,592,448/619,739,945.40
  6. Step 6: Final answer
    x = 929,609,918.10

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Double scale
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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.