Home / 865,949,536.30-1,195,183,967.16-513,721,036.30

Finding the Fourth Proportional to 865,949,536.30, 1,195,183,967.16 and 513,721,036.30

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Solution

The fourth proportional to 865,949,536.30, 1,195,183,967.16 and 513,721,036.30 is: 709,038,021.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,949,536.30 : 1,195,183,967.16 = 513,721,036.30 : x
  2. Step 2: Convert to fraction form
    865,949,536.30/1,195,183,967.16 = 513,721,036.30/x
  3. Step 3: Cross multiply
    865,949,536.30x = 1,195,183,967.16 × 513,721,036.30
  4. Step 4: Simplify right side
    865,949,536.30x = 613,991,146,178,580,480
  5. Step 5: Solve for x
    x = 613,991,146,178,580,480/865,949,536.30
  6. Step 6: Final answer
    x = 709,038,021.78

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1.5x scale

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.