Home / 511,840,939.40-767,761,409.10-455,405,841.80

Finding the Fourth Proportional to 511,840,939.40, 767,761,409.10 and 455,405,841.80

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Solution

The fourth proportional to 511,840,939.40, 767,761,409.10 and 455,405,841.80 is: 683,108,762.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,840,939.40 : 767,761,409.10 = 455,405,841.80 : x
  2. Step 2: Convert to fraction form
    511,840,939.40/767,761,409.10 = 455,405,841.80/x
  3. Step 3: Cross multiply
    511,840,939.40x = 767,761,409.10 × 455,405,841.80
  4. Step 4: Simplify right side
    511,840,939.40x = 349,643,030,812,739,712
  5. Step 5: Solve for x
    x = 349,643,030,812,739,712/511,840,939.40
  6. Step 6: Final answer
    x = 683,108,762.70

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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.