Home / 874,729,389.76-1,207,128,728.28-478,277,961.28

Finding the Fourth Proportional to 874,729,389.76, 1,207,128,728.28 and 478,277,961.28

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Solution

The fourth proportional to 874,729,389.76, 1,207,128,728.28 and 478,277,961.28 is: 660,024,773.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,729,389.76 : 1,207,128,728.28 = 478,277,961.28 : x
  2. Step 2: Convert to fraction form
    874,729,389.76/1,207,128,728.28 = 478,277,961.28/x
  3. Step 3: Cross multiply
    874,729,389.76x = 1,207,128,728.28 × 478,277,961.28
  4. Step 4: Simplify right side
    874,729,389.76x = 577,343,067,164,277,376
  5. Step 5: Solve for x
    x = 577,343,067,164,277,376/874,729,389.76
  6. Step 6: Final answer
    x = 660,024,773.29

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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.