Home / 511,056,709.40-766,585,064.10-280,936,875.80

Finding the Fourth Proportional to 511,056,709.40, 766,585,064.10 and 280,936,875.80

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Solution

The fourth proportional to 511,056,709.40, 766,585,064.10 and 280,936,875.80 is: 421,405,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,056,709.40 : 766,585,064.10 = 280,936,875.80 : x
  2. Step 2: Convert to fraction form
    511,056,709.40/766,585,064.10 = 280,936,875.80/x
  3. Step 3: Cross multiply
    511,056,709.40x = 766,585,064.10 × 280,936,875.80
  4. Step 4: Simplify right side
    511,056,709.40x = 215,362,012,943,196,768
  5. Step 5: Solve for x
    x = 215,362,012,943,196,768/511,056,709.40
  6. Step 6: Final answer
    x = 421,405,313.70

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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.