Home / 1,490,398,398.79-2,056,689,909.25-812,200,948.31

Finding the Fourth Proportional to 1,490,398,398.79, 2,056,689,909.25 and 812,200,948.31

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Solution

The fourth proportional to 1,490,398,398.79, 2,056,689,909.25 and 812,200,948.31 is: 1,120,804,676.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,398,398.79 : 2,056,689,909.25 = 812,200,948.31 : x
  2. Step 2: Convert to fraction form
    1,490,398,398.79/2,056,689,909.25 = 812,200,948.31/x
  3. Step 3: Cross multiply
    1,490,398,398.79x = 2,056,689,909.25 × 812,200,948.31
  4. Step 4: Simplify right side
    1,490,398,398.79x = 1,670,445,494,660,143,616
  5. Step 5: Solve for x
    x = 1,670,445,494,660,143,616/1,490,398,398.79
  6. Step 6: Final answer
    x = 1,120,804,676.13

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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.