Home / 1,238,493,705.40-1,857,740,558.10-420,606,006.40

Finding the Fourth Proportional to 1,238,493,705.40, 1,857,740,558.10 and 420,606,006.40

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Solution

The fourth proportional to 1,238,493,705.40, 1,857,740,558.10 and 420,606,006.40 is: 630,909,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,493,705.40 : 1,857,740,558.10 = 420,606,006.40 : x
  2. Step 2: Convert to fraction form
    1,238,493,705.40/1,857,740,558.10 = 420,606,006.40/x
  3. Step 3: Cross multiply
    1,238,493,705.40x = 1,857,740,558.10 × 420,606,006.40
  4. Step 4: Simplify right side
    1,238,493,705.40x = 781,376,837,069,748,096
  5. Step 5: Solve for x
    x = 781,376,837,069,748,096/1,238,493,705.40
  6. Step 6: Final answer
    x = 630,909,009.60

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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.