Home / 1,328,712,653.20-1,993,068,979.80-812,152,001.20

Finding the Fourth Proportional to 1,328,712,653.20, 1,993,068,979.80 and 812,152,001.20

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Solution

The fourth proportional to 1,328,712,653.20, 1,993,068,979.80 and 812,152,001.20 is: 1,218,228,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,712,653.20 : 1,993,068,979.80 = 812,152,001.20 : x
  2. Step 2: Convert to fraction form
    1,328,712,653.20/1,993,068,979.80 = 812,152,001.20/x
  3. Step 3: Cross multiply
    1,328,712,653.20x = 1,993,068,979.80 × 812,152,001.20
  4. Step 4: Simplify right side
    1,328,712,653.20x = 1,618,674,960,474,212,352
  5. Step 5: Solve for x
    x = 1,618,674,960,474,212,352/1,328,712,653.20
  6. Step 6: Final answer
    x = 1,218,228,001.80

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1.5x scale

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.