Home / 1,238,800,830.90-1,858,201,246.35-687,802,802.10

Finding the Fourth Proportional to 1,238,800,830.90, 1,858,201,246.35 and 687,802,802.10

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Solution

The fourth proportional to 1,238,800,830.90, 1,858,201,246.35 and 687,802,802.10 is: 1,031,704,203.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,800,830.90 : 1,858,201,246.35 = 687,802,802.10 : x
  2. Step 2: Convert to fraction form
    1,238,800,830.90/1,858,201,246.35 = 687,802,802.10/x
  3. Step 3: Cross multiply
    1,238,800,830.90x = 1,858,201,246.35 × 687,802,802.10
  4. Step 4: Simplify right side
    1,238,800,830.90x = 1,278,076,024,105,242,368
  5. Step 5: Solve for x
    x = 1,278,076,024,105,242,368/1,238,800,830.90
  6. Step 6: Final answer
    x = 1,031,704,203.15

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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.