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Finding the Fourth Proportional to 992,354,703.60, 1,488,532,055.40 and 664,987,047.60

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Solution

The fourth proportional to 992,354,703.60, 1,488,532,055.40 and 664,987,047.60 is: 997,480,571.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,354,703.60 : 1,488,532,055.40 = 664,987,047.60 : x
  2. Step 2: Convert to fraction form
    992,354,703.60/1,488,532,055.40 = 664,987,047.60/x
  3. Step 3: Cross multiply
    992,354,703.60x = 1,488,532,055.40 × 664,987,047.60
  4. Step 4: Simplify right side
    992,354,703.60x = 989,854,536,778,405,760
  5. Step 5: Solve for x
    x = 989,854,536,778,405,760/992,354,703.60
  6. Step 6: Final answer
    x = 997,480,571.40

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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.