Home / 1,207,224,021.20-1,810,836,031.80-430,895,008.40

Finding the Fourth Proportional to 1,207,224,021.20, 1,810,836,031.80 and 430,895,008.40

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Solution

The fourth proportional to 1,207,224,021.20, 1,810,836,031.80 and 430,895,008.40 is: 646,342,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,224,021.20 : 1,810,836,031.80 = 430,895,008.40 : x
  2. Step 2: Convert to fraction form
    1,207,224,021.20/1,810,836,031.80 = 430,895,008.40/x
  3. Step 3: Cross multiply
    1,207,224,021.20x = 1,810,836,031.80 × 430,895,008.40
  4. Step 4: Simplify right side
    1,207,224,021.20x = 780,280,207,133,483,648
  5. Step 5: Solve for x
    x = 780,280,207,133,483,648/1,207,224,021.20
  6. Step 6: Final answer
    x = 646,342,512.60

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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.